{"id":7711,"date":"2022-05-21T23:45:14","date_gmt":"2022-05-21T23:45:14","guid":{"rendered":"https:\/\/humanbio.org\/?page_id=7711"},"modified":"2022-05-22T00:15:56","modified_gmt":"2022-05-22T00:15:56","slug":"barriers","status":"publish","type":"page","link":"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/barriers\/","title":{"rendered":"9a1 Barriers"},"content":{"rendered":"<!--themify_builder_content-->\n<div id=\"themify_builder_content-7711\" data-postid=\"7711\" class=\"themify_builder_content themify_builder_content-7711 themify_builder tf_clear\">\n                    <div  data-parallax-bg=\"desktop\" data-css_id=\"ngpm782\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth_row_container tb_ngpm782 tb_first tf_w\">\n            <span  class=\"builder_row_cover tf_abs\" data-lazy=\"1\"><\/span>            <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_7un1784 first\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_awp5785 image-center   tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=100%2C100&#038;ssl=1\" width=\"100\" height=\"100\" class=\"wp-post-image wp-image-362\" title=\"Number 1 orange square\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=768%2C772&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?w=995&amp;ssl=1 995w\" sizes=\"auto, (max-width: 100px) 100vw, 100px\" \/>    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <\/div>\n<!-- \/module image --><!-- module text -->\n<div  class=\"module module-text tb_f0fa785  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h1>Defenses Overview &amp; Barriers<\/h1>    <\/div>\n<\/div>\n<!-- \/module text --><!-- module icon -->\n<div  class=\"module module-icon tb_5w0k785  normal circle icon_horizontal tf_textl\" data-lazy=\"1\">\n\t\t\t<div class=\"module-icon-item\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<em class=\"tf_boxyellow\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t><svg  class=\"tf_fa tf-ti-angle-down\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" aria-hidden=\"true\"><use href=\"#tf-ti-angle-down\" xlink:href=\"#tf-ti-angle-down\"><\/use><\/svg><\/em>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span>scroll down<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t<\/div>\n<!-- \/module icon -->\n        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-css_id=\"bngd782\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth_row_container tb_bngd782 tf_w\">\n                        <div class=\"row_inner col_align_middle tb_col_count_2 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col4-2 tb_bvwu786 first\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_4xmo786 image-top   tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1165\" height=\"839\" src=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=1165%2C839&#038;ssl=1\" class=\"wp-post-image wp-image-5372\" title=\"1\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?w=2000&amp;ssl=1 2000w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=300%2C216&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=1024%2C738&amp;ssl=1 1024w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=768%2C553&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=1536%2C1107&amp;ssl=1 1536w\" sizes=\"auto, (max-width: 1165px) 100vw, 1165px\" \/>    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column tb-column col4-2 tb_a2i2786 last\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_9aq1786  repeat  wow\" data-tf-animation=\"fadeInUp\" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h3>Defenses &amp; Barriers Objectives<\/h3>    <\/div>\n<\/div>\n<!-- \/module text --><!-- module text -->\n<div  class=\"module module-text tb_3iyr786  repeat  wow\" data-tf-animation=\"fadeInUp\" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <ul>\n<li class=\"p1\">\n<h6><span class=\"s1\">Describe how the integumentary system, cardiovascular system, skeletal system, and lymphatic system play a role in defense.<\/span><\/h6>\n<\/li>\n<li class=\"p1\">\n<h6><span class=\"s1\">List the two non-specific innate defenses and the two specific acquired defenses.<\/span><\/h6>\n<\/li>\n<li class=\"p1\">\n<h6><span class=\"s1\">Provide examples of barriers that keep pathogens and parasites out of the body.<\/span><\/h6>\n<\/li>\n<\/ul>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-desktop-padding=\"3px,3px\" data-css_id=\"e7wx783\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth_row_container tb_e7wx783 tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_1ng1787 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_9sfx787  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <div class=\"page\" title=\"Page 19\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<h6>The body\u2019s defenses against pathogens are often called the \u201cimmune system.\u201d\u00a0 However, there is no single immune system like the other organ systems we have been covering in this course.\u00a0 \u00a0The body has multiple defenses against pathogens, involving multiple organ systems.<\/h6>\n<\/div>\n<\/div>\n<\/div>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-lazy=\"1\" class=\"module_row themify_builder_row tb_urwo783 tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_klxf787 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_c62o787  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h6 style=\"text-align: center;\"><strong>This video provides an overview of the human defenses against pathogens and parasites.<\/strong><\/h6>    <\/div>\n<\/div>\n<!-- \/module text --><!-- module video -->\n<div  class=\"module module-video tb_99ri787 video-top  \" data-lazy=\"1\">\n                    <div class=\"video-wrap-outer\">\n            <div class=\"video-wrap tf_rel tf_overflow\">\n                                    <noscript><iframe data-no-script src=\"https:\/\/player.vimeo.com\/video\/420883723?h=&#038;pip=1&#038;playsinline=1&#038;portrait=0&#038;title=0&#038;byline=0\" allow=\"fullscreen\" class=\"tf_abs tf_w tf_h\"><\/iframe><\/noscript>\n                                <\/div>\n            <!-- \/video-wrap -->\n        <\/div>\n        <!-- \/video-wrap-outer -->\n            <\/div>\n        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-css_id=\"l6d1783\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth_row_container tb_l6d1783 tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_u21d788 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_4a0y788  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h3>Here are four organ systems involved in the response against pathogens.<\/h3>    <\/div>\n<\/div>\n<!-- \/module text -->        <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_top tb_col_count_4 tb_ys85788\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_kam5789 first\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_0tyw789 image-center   tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/naturejournals.org\/wp-content\/uploads\/2019\/08\/skin-a-1024x793.jpg?resize=1024%2C200\" width=\"1024\" height=\"200\" title=\"Integumentary System\" alt=\"\">    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <div class=\"image-content\">\n                    <h3 class=\"image-title\">\n                                    Integumentary System                            <\/h3>\n                        <div class=\"image-caption tb_text_wrap\">\n            Skin and secretions like tears and urine are a barrier against pathogens.  Mucus-membranes line the trachea to trap and move pathogens up and out of the respiratory system.        <\/div>\n        <!-- \/image-caption -->\n            <\/div>\n    <!-- \/image-content -->\n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_xp3r789\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_7c6z790 image-center   tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/naturejournals.org\/wp-content\/uploads\/2019\/08\/bone-marrow-b-1024x697.jpg?resize=1024%2C200\" width=\"1024\" height=\"200\" title=\"Skeletal System\" alt=\"\">    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <div class=\"image-content\">\n                    <h3 class=\"image-title\">\n                                    Skeletal System                            <\/h3>\n                        <div class=\"image-caption tb_text_wrap\">\n            The bone marrow produces white blood cells and each cell can destroy pathogens in different ways.        <\/div>\n        <!-- \/image-caption -->\n            <\/div>\n    <!-- \/image-content -->\n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_0xgr790\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_549p790 image-center   tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/naturejournals.org\/wp-content\/uploads\/2019\/08\/vessel-1024x682.jpg?resize=1024%2C200\" width=\"1024\" height=\"200\" title=\"Cardiovascular System\" alt=\"\">    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <div class=\"image-content\">\n                    <h3 class=\"image-title\">\n                                    Cardiovascular System                            <\/h3>\n                        <div class=\"image-caption tb_text_wrap\">\n            Some white blood cells travel through the blood to distant locations like the thymus and lymph nodes, while others patrol the blood in search of pathogens.        <\/div>\n        <!-- \/image-caption -->\n            <\/div>\n    <!-- \/image-content -->\n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_dn8m790 last\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_1i3w790 image-center   tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/naturejournals.org\/wp-content\/uploads\/2019\/08\/lymph-node-b-1024x925.jpg?resize=1024%2C200\" width=\"1024\" height=\"200\" title=\"Lymphatic System\" alt=\"\">    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <div class=\"image-content\">\n                    <h3 class=\"image-title\">\n                                    Lymphatic System                            <\/h3>\n                        <div class=\"image-caption tb_text_wrap\">\n            Some white blood cells monitor pathogens that may have accumulate in the lymph (extracellular fluid).  Lymphocytes wait in lymph nodes, prepared to pounce on pathogens.        <\/div>\n        <!-- \/image-caption -->\n            <\/div>\n    <!-- \/image-content -->\n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <\/div>\n                <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-lazy=\"1\" class=\"module_row themify_builder_row tb_ckb9783 tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_k0bv790 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_tigr791  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h2>These organ systems form four lines of defense<\/h2>    <\/div>\n<\/div>\n<!-- \/module text --><!-- module text -->\n<div  class=\"module module-text tb_nlaz791  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <p>Two non-specific and two specific defenses.<\/p>    <\/div>\n<\/div>\n<!-- \/module text -->        <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_top tb_col_count_4 tb_0cyg791\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_o698791 first\">\n                    <!-- module feature -->\n<div  class=\"module module-feature tb_8ofl791 no-chart layout-icon-top size-large \" data-layout-mobile=\"icon-top\" data-layout-desktop=\"icon-top\" data-lazy=\"1\">\n        <div class=\"module-feature-image tf_textc tf_rel\">\n                            <span class=\"module-feature-chart-html5 tf_box tf_rel tf_inline_b\" style=\"background-color:#fa2a0a\">\n                                <span class=\"chart-html5-circle tf_w tf_h\">\n                                            <em class=\"module-feature-icon tf_rel\" style=\"color:#ffffff\"><svg  class=\"tf_fa tf-ti-hand-stop\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" aria-hidden=\"true\"><use href=\"#tf-ti-hand-stop\" xlink:href=\"#tf-ti-hand-stop\"><\/use><\/svg><\/em>\n                                    <\/span>\n\n                \n            <\/span>\n                <\/div>\n    <div class=\"module-feature-content tf_textc\">\n                        <h3 class=\"module-feature-title\">\n                                    Barriers                                <\/h3>\n                        <div class=\"tb_text_wrap\">\n            <p>skin, mucus membranes, and secretions keep pathogens out of the body.<\/p>        <\/div>\n    <\/div>\n<\/div>\n<!-- \/module feature -->\n        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_mcus791\">\n                    <!-- module feature -->\n<div  class=\"module module-feature tb_wzho791 no-chart layout-icon-top size-large \" data-layout-mobile=\"icon-top\" data-layout-desktop=\"icon-top\" data-lazy=\"1\">\n        <div class=\"module-feature-image tf_textc tf_rel\">\n                            <span class=\"module-feature-chart-html5 tf_box tf_rel tf_inline_b\" style=\"background-color:#fa8a0a\">\n                                <span class=\"chart-html5-circle tf_w tf_h\">\n                                            <em class=\"module-feature-icon tf_rel\" style=\"color:#ffffff\"><svg  class=\"tf_fa tf-fas-fire-alt\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" aria-hidden=\"true\"><use href=\"#tf-fas-fire-alt\" xlink:href=\"#tf-fas-fire-alt\"><\/use><\/svg><\/em>\n                                    <\/span>\n\n                \n            <\/span>\n                <\/div>\n    <div class=\"module-feature-content tf_textc\">\n                        <h3 class=\"module-feature-title\">\n                                    Inflammation                                <\/h3>\n                        <div class=\"tb_text_wrap\">\n            <p>permeable blood vessels bring in platelets and white blood cells.<\/p>        <\/div>\n    <\/div>\n<\/div>\n<!-- \/module feature -->\n        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_dko4791\">\n                    <!-- module feature -->\n<div  class=\"module module-feature tb_j8fo791 no-chart layout-icon-top size-large \" data-layout-mobile=\"icon-top\" data-layout-desktop=\"icon-top\" data-lazy=\"1\">\n        <div class=\"module-feature-image tf_textc tf_rel\">\n                            <span class=\"module-feature-chart-html5 tf_box tf_rel tf_inline_b\" style=\"background-color:#8cc53f\">\n                                <span class=\"chart-html5-circle tf_w tf_h\">\n                                            <em class=\"module-feature-icon tf_rel\" style=\"color:#ffffff\"><svg  class=\"tf_fa tf-fas-cookie\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" aria-hidden=\"true\"><use href=\"#tf-fas-cookie\" xlink:href=\"#tf-fas-cookie\"><\/use><\/svg><\/em>\n                                    <\/span>\n\n                \n            <\/span>\n                <\/div>\n    <div class=\"module-feature-content tf_textc\">\n                        <h3 class=\"module-feature-title\">\n                                    Cell-mediated Immunity                                <\/h3>\n                        <div class=\"tb_text_wrap\">\n            <p>white blood cells seek out and destroy cells infected with specific pathogens.<\/p>        <\/div>\n    <\/div>\n<\/div>\n<!-- \/module feature -->\n        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_u1hb791 last\">\n                    <!-- module feature -->\n<div  class=\"module module-feature tb_nzft791 no-chart layout-icon-top size-large \" data-layout-mobile=\"icon-top\" data-layout-desktop=\"icon-top\" data-lazy=\"1\">\n        <div class=\"module-feature-image tf_textc tf_rel\">\n                            <span class=\"module-feature-chart-html5 tf_box tf_rel tf_inline_b\" style=\"background-color:#fff204\">\n                                <span class=\"chart-html5-circle tf_w tf_h\">\n                                            <em class=\"module-feature-icon tf_rel\" style=\"color:#ffffff\"><svg  class=\"tf_fa tf-fas-sticky-note\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" aria-hidden=\"true\"><use href=\"#tf-fas-sticky-note\" xlink:href=\"#tf-fas-sticky-note\"><\/use><\/svg><\/em>\n                                    <\/span>\n\n                \n            <\/span>\n                <\/div>\n    <div class=\"module-feature-content tf_textc\">\n                        <h3 class=\"module-feature-title\">\n                                    Antibody-mediated Immunity                                <\/h3>\n                        <div class=\"tb_text_wrap\">\n            <p>white blood cells produce antibodies that stick to specific pathogens.<\/p>        <\/div>\n    <\/div>\n<\/div>\n<!-- \/module feature -->\n        <\/div>\n                    <\/div>\n                <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-lazy=\"1\" class=\"module_row themify_builder_row tb_4tha783 tf_w\">\n                        <div class=\"row_inner col_align_middle tb_col_count_2 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col4-3 tb_wlto792 first\">\n                    <!-- module video -->\n<div  class=\"module module-video tb_8hub792 video-top  \" data-lazy=\"1\">\n                    <div class=\"video-wrap-outer\">\n            <div class=\"video-wrap tf_rel tf_overflow\">\n                                    <noscript><iframe data-no-script src=\"https:\/\/player.vimeo.com\/video\/421163464?h=&#038;pip=1&#038;playsinline=1&#038;portrait=0&#038;title=0&#038;byline=0\" allow=\"fullscreen\" class=\"tf_abs tf_w tf_h\"><\/iframe><\/noscript>\n                                <\/div>\n            <!-- \/video-wrap -->\n        <\/div>\n        <!-- \/video-wrap-outer -->\n            <\/div>\n        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column tb-column col4-1 tb_comq792 last\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_ml4o792   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <p style=\"text-align: left;\"><b>This is a quick look at the four basic defenses, two that are non-specific (barriers and inflammation) and two that are specific involving T Lymphocytes (T cells) killing infected cells and B lymphocytes (B cells) producing antibodies.<\/b><\/p>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-anchor=\"testimonial\" data-css_id=\"2ngi783\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth_row_container tb_has_section tb_section-testimonial tb_2ngi783 tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_jgrc792 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_c0lr792  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h5>Two lines of defense are non-specific, pre-programmed and similar responses to any potential pathogen.<\/h5>    <\/div>\n<\/div>\n<!-- \/module text -->        <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_top tb_col_count_2 tb_ih6p792\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column col4-2 tb_d35d792 first\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_zmi6793 image-center   tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/naturejournals.org\/wp-content\/uploads\/2019\/08\/skin-b-1024x941.jpg?resize=1024%2C300\" width=\"1024\" height=\"300\" title=\"Barriers\" alt=\"\">    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <div class=\"image-content\">\n                    <h3 class=\"image-title\">\n                                    Barriers                            <\/h3>\n                        <div class=\"image-caption tb_text_wrap\">\n            Structures and chemicals keep pathogens from entering the body.        <\/div>\n        <!-- \/image-caption -->\n            <\/div>\n    <!-- \/image-content -->\n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-2 tb_tnqm793 last\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_ezp9793 image-center   tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/naturejournals.org\/wp-content\/uploads\/2019\/08\/t-cell-normal-1-1024x717.jpg?resize=1024%2C300\" width=\"1024\" height=\"300\" title=\"Inflammation\" alt=\"\">    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <div class=\"image-content\">\n                    <h3 class=\"image-title\">\n                                    Inflammation                            <\/h3>\n                        <div class=\"image-caption tb_text_wrap\">\n            Wounded cells release chemicals that dilate blood vessels and bring in blood to clean the wounded area.  The next section describes inflammation in detail.        <\/div>\n        <!-- \/image-caption -->\n            <\/div>\n    <!-- \/image-content -->\n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <\/div>\n                <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-lazy=\"1\" class=\"module_row themify_builder_row tb_uiuh783 tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_d20p793 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_2any793  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h3 style=\"text-align: center;\">Barriers<\/h3>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-lazy=\"1\" class=\"module_row themify_builder_row tb_1v4n783 tf_w\">\n                        <div class=\"row_inner col_align_middle tb_col_count_2 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col4-3 tb_5jy9793 first\">\n                    <!-- module video -->\n<div  class=\"module module-video tb_qxdr793 video-top  \" data-lazy=\"1\">\n                    <div class=\"video-wrap-outer\">\n            <div class=\"video-wrap tf_rel tf_overflow\">\n                                    <noscript><iframe data-no-script src=\"https:\/\/player.vimeo.com\/video\/421361517?h=&#038;pip=1&#038;playsinline=1&#038;portrait=0&#038;title=0&#038;byline=0\" allow=\"fullscreen\" class=\"tf_abs tf_w tf_h\"><\/iframe><\/noscript>\n                                <\/div>\n            <!-- \/video-wrap -->\n        <\/div>\n        <!-- \/video-wrap-outer -->\n            <\/div>\n        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column tb-column col4-1 tb_miwq793 last\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_7irw793   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <p style=\"text-align: left;\"><b>The skin is a very effective barrier, but even shallow abrasions to the epidermis could lead to an infection.<\/b><\/p>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-lazy=\"1\" class=\"module_row themify_builder_row tb_y833783 tf_w\">\n                        <div class=\"row_inner col_align_middle tb_col_count_2 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col4-1 tb_vax8794 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_tc6c794   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <p style=\"text-align: left;\"><b>Mucus is a critical barrier secretion in the respiratory system, but excessive mucus can result in a variety of disorders, including sinusitis.<\/b><\/p>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column tb-column col4-3 tb_p7h1794 last\">\n                    <!-- module video -->\n<div  class=\"module module-video tb_kj7j794 video-top  \" data-lazy=\"1\">\n                    <div class=\"video-wrap-outer\">\n            <div class=\"video-wrap tf_rel tf_overflow\">\n                                    <noscript><iframe data-no-script src=\"https:\/\/player.vimeo.com\/video\/421362277?h=&#038;pip=1&#038;playsinline=1&#038;portrait=0&#038;title=0&#038;byline=0\" allow=\"fullscreen\" class=\"tf_abs tf_w tf_h\"><\/iframe><\/noscript>\n                                <\/div>\n            <!-- \/video-wrap -->\n        <\/div>\n        <!-- \/video-wrap-outer -->\n            <\/div>\n        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-parallax-bg=\"desktop\" data-css_id=\"unob783\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth_row_container tb_unob783 tf_w\">\n            <span  class=\"builder_row_cover tf_abs\" data-lazy=\"1\"><\/span>            <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_740h794 first\">\n                            <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_top tb_col_count_3 tb_hx12794\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_eds8794 first\">\n                            <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-2 tb_fevy794\">\n                            <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_tt85794 last\">\n                            <\/div>\n                    <\/div>\n                <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-desktop-padding=\"3px,3px\" data-css_id=\"08df783\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth_row_container tb_08df783 tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_hepo795 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_tycm796  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h6>The next section provides an overview of inflammation, another non-specific defense.<\/h6>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-css_id=\"xa91783\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth_row_container tb_xa91783 tf_w\">\n                        <div class=\"row_inner col_align_middle tb_col_count_2 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col4-2 tb_2wm0796 first\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_ni06796 image-top   tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1165\" height=\"839\" src=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=1165%2C839&#038;ssl=1\" class=\"wp-post-image wp-image-5372\" title=\"1\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?w=2000&amp;ssl=1 2000w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=300%2C216&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=1024%2C738&amp;ssl=1 1024w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=768%2C553&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=1536%2C1107&amp;ssl=1 1536w\" sizes=\"auto, (max-width: 1165px) 100vw, 1165px\" \/>    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column tb-column col4-2 tb_nc1e796 last\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_avev796  repeat  wow\" data-tf-animation=\"fadeInUp\" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h5>Check your knowledge.\u00a0 Can you:<\/h5>    <\/div>\n<\/div>\n<!-- \/module text --><!-- module text -->\n<div  class=\"module module-text tb_l50q796  repeat  wow\" data-tf-animation=\"fadeInUp\" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <ul>\n<li class=\"p1\">\n<h6><span class=\"s1\">describe how the integumentary system, cardiovascular system, skeletal system, and lymphatic system play a role in defense?<\/span><\/h6>\n<\/li>\n<li class=\"p1\">\n<h6><span class=\"s1\">l<\/span>ist the two non-specific innate defenses and the two specific acquired defenses?<\/h6>\n<\/li>\n<li class=\"p1\">\n<h6><span class=\"s1\">provide examples of barriers that keep pathogens and parasites out of the body?<\/span><\/h6>\n<\/li>\n<\/ul>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-css_id=\"0wbi783\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth tb_0wbi783 tf_w\">\n            <span  class=\"builder_row_cover tf_abs\" data-lazy=\"1\"><\/span>            <div class=\"row_inner gutter-none col_align_middle tb_col_count_2 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col4-2 tb_3pqc796 first\">\n        <span  class=\"builder_row_cover tf_abs\" data-lazy=\"1\"><\/span>            <!-- module image -->\n<div  class=\"module module-image tb_16yw797 image-top drop-shadow  tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/#\">\n                   <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=100%2C100&#038;ssl=1\" width=\"100\" height=\"100\" class=\"wp-post-image wp-image-361\" title=\"Guide Icon\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=768%2C768&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?w=1000&amp;ssl=1 1000w\" sizes=\"auto, (max-width: 100px) 100vw, 100px\" \/>        <\/a>\n    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <\/div>\n<!-- \/module image --><!-- module text -->\n<div  class=\"module module-text tb_z1us797  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h3>Go back to the Defense Systems Guide Overview<\/h3>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column tb-column col4-2 tb_499r797 last\">\n        <span  class=\"builder_row_cover tf_abs\" data-lazy=\"1\"><\/span>            <!-- module image -->\n<div  class=\"module module-image tb_5ivs797 image-top drop-shadow  tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/inflammation\/#\">\n                   <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=100%2C100&#038;ssl=1\" width=\"100\" height=\"100\" class=\"wp-post-image wp-image-363\" title=\"Number 2 orange square\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=768%2C772&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?w=995&amp;ssl=1 995w\" sizes=\"auto, (max-width: 100px) 100vw, 100px\" \/>        <\/a>\n    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <\/div>\n<!-- \/module image --><!-- module text -->\n<div  class=\"module module-text tb_2fph797  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h3>Go forward to the Inflammation Page<\/h3>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-lazy=\"1\" class=\"module_row themify_builder_row tb_2cbx148 tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_4c4z148 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_mj83148  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h3>Defense Systems Lecture Guide Contents<\/h3>    <\/div>\n<\/div>\n<!-- \/module text --><!-- module divider -->\n<div  class=\"module tf_mw module-divider tb_u9qb148 solid  divider-custom divider-center\" style=\"border-width: 3px;border-color: #62a110;margin-top: 10px;margin-bottom: 20px;max-width: 120px;\" data-lazy=\"1\">\n    <\/div>\n<!-- \/module divider -->\n<!-- module text -->\n<div  class=\"module module-text tb_znlp148  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h6>The material from this guide and corresponding lecture is assessed on the weekly quiz.<\/h6>    <\/div>\n<\/div>\n<!-- \/module text -->        <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_top tb_col_count_4 tb_37yh148\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_kkuw149 first\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_dr7s149 image-top   tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=200%2C200&#038;ssl=1\" width=\"200\" height=\"200\" class=\"wp-post-image wp-image-362\" title=\"Overview &amp; Barriers - YOU ARE HERE\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=768%2C772&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?w=995&amp;ssl=1 995w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/>    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <div class=\"image-content\">\n                    <h3 class=\"image-title\">\n                                    Overview & Barriers - YOU ARE HERE                            <\/h3>\n                    <\/div>\n    <!-- \/image-content -->\n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_tssu149\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_nb79149 image-top drop-shadow  tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/inflammation\/#\">\n                   <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=200%2C200&#038;ssl=1\" width=\"200\" height=\"200\" class=\"wp-post-image wp-image-363\" title=\"Inflammation\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=768%2C772&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?w=995&amp;ssl=1 995w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/>        <\/a>\n    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <div class=\"image-content\">\n                    <h3 class=\"image-title\">\n                                    <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/inflammation\/#\">\n                        Inflammation                    <\/a>\n                            <\/h3>\n                    <\/div>\n    <!-- \/image-content -->\n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_8k8k149\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_jytm149 image-top drop-shadow  tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/cell-mediated\/#\">\n                   <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?resize=200%2C200&#038;ssl=1\" width=\"200\" height=\"200\" class=\"wp-post-image wp-image-364\" title=\"Cell-Mediated\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?resize=768%2C770&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?w=997&amp;ssl=1 997w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/>        <\/a>\n    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <div class=\"image-content\">\n                    <h3 class=\"image-title\">\n                                    <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/cell-mediated\/#\">\n                        Cell-Mediated                    <\/a>\n                            <\/h3>\n                    <\/div>\n    <!-- \/image-content -->\n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-1 tb_o2zj149 last\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_6uy3150 image-top drop-shadow  tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/antibody-mediated\/#\">\n                   <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?resize=200%2C200&#038;ssl=1\" width=\"200\" height=\"200\" class=\"wp-post-image wp-image-365\" title=\"Antibody-Mediated\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?resize=768%2C770&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?w=997&amp;ssl=1 997w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/>        <\/a>\n    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <div class=\"image-content\">\n                    <h3 class=\"image-title\">\n                                    <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/antibody-mediated\/#\">\n                        Antibody-Mediated                    <\/a>\n                            <\/h3>\n                    <\/div>\n    <!-- \/image-content -->\n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <\/div>\n                <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-css_id=\"yjy7783\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth tb_yjy7783 tf_w\">\n            <span  class=\"builder_row_cover tf_abs\" data-lazy=\"1\"><\/span>            <div class=\"row_inner gutter-none col_align_top tb_col_count_3 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col3-1 tb_k1jl798 first\">\n        <span  class=\"builder_row_cover tf_abs\" data-lazy=\"1\"><\/span>            <!-- module image -->\n<div  class=\"module module-image tb_w8lg798 image-top drop-shadow  tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/#\">\n                   <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Module-Icon.jpg?resize=100%2C100&#038;ssl=1\" width=\"100\" height=\"100\" class=\"wp-post-image wp-image-357\" title=\"Module Icon\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Module-Icon.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Module-Icon.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Module-Icon.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Module-Icon.jpg?resize=768%2C772&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Module-Icon.jpg?w=995&amp;ssl=1 995w\" sizes=\"auto, (max-width: 100px) 100vw, 100px\" \/>        <\/a>\n    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <\/div>\n<!-- \/module image --><!-- module text -->\n<div  class=\"module module-text tb_r6yq798  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h3>Back to Module 9<\/h3>\n<h5>This week&#8217;s overview<\/h5>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column tb-column col3-1 tb_awkp799\">\n        <span  class=\"builder_row_cover tf_abs\" data-lazy=\"1\"><\/span>            <!-- module image -->\n<div  class=\"module module-image tb_2wkn799 image-top drop-shadow  tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/#\">\n                   <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=100%2C100&#038;ssl=1\" width=\"100\" height=\"100\" class=\"wp-post-image wp-image-361\" title=\"Guide Icon\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=768%2C768&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?w=1000&amp;ssl=1 1000w\" sizes=\"auto, (max-width: 100px) 100vw, 100px\" \/>        <\/a>\n    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <\/div>\n<!-- \/module image --><!-- module text -->\n<div  class=\"module module-text tb_1lv8799  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h3>This Guide<\/h3>\n<h6>Defense Systems<\/h6>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column tb-column col3-1 tb_gn79153 last\">\n        <span  class=\"builder_row_cover tf_abs\" data-lazy=\"1\"><\/span>            <!-- module image -->\n<div  class=\"module module-image tb_t8hw154 image-top drop-shadow circle  tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <a href=\"https:\/\/oregonstate.instructure.com\">\n                   <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/vividscience.org\/wp-content\/uploads\/2018\/10\/Screen-Shot-2018-10-14-at-10.32.37-PM-3.png?resize=100%2C368\" width=\"100\" height=\"368\" alt=\"\">        <\/a>\n    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <\/div>\n<!-- \/module image --><!-- module text -->\n<div  class=\"module module-text tb_weaq155  repeat \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h3>Direct Link to Canvas<\/h3>\n<h5>Submit Products<\/h5>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                        <\/div>\n        <\/div>\n        <\/div>\n<!--\/themify_builder_content-->","protected":false},"excerpt":{"rendered":"<p>Defenses Overview &amp; Barriers scroll down Defenses &amp; Barriers Objectives Describe how<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":7650,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"nf_dc_page":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"class_list":["post-7711","page","type-page","status-publish","hentry","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author",""],"jetpack_sharing_enabled":true,"builder_content":"<img src=\"https:\/\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square-100x100.jpg\" width=\"100\" height=\"100\" title=\"Number 1 orange square\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=768%2C772&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?w=995&amp;ssl=1 995w\" sizes=\"(max-width: 100px) 100vw, 100px\" \/>\n<h1>Defenses Overview &amp; Barriers<\/h1>\n<em ><svg xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" aria-hidden=\"true\"><use href=\"#tf-ti-angle-down\" xlink:href=\"#tf-ti-angle-down\"><\/use><\/svg><\/em> scroll down\n<img src=\"https:\/\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg\" title=\"1\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?w=2000&amp;ssl=1 2000w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=300%2C216&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=1024%2C738&amp;ssl=1 1024w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=768%2C553&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=1536%2C1107&amp;ssl=1 1536w\" sizes=\"(max-width: 2000px) 100vw, 2000px\" \/>\n<h3>Defenses &amp; Barriers Objectives<\/h3>\n<ul> <li> <h6>Describe how the integumentary system, cardiovascular system, skeletal system, and lymphatic system play a role in defense.<\/h6> <\/li> <li> <h6>List the two non-specific innate defenses and the two specific acquired defenses.<\/h6> <\/li> <li> <h6>Provide examples of barriers that keep pathogens and parasites out of the body.<\/h6> <\/li> <\/ul>\n<h6>The body\u2019s defenses against pathogens are often called the \u201cimmune system.\u201d\u00a0 However, there is no single immune system like the other organ systems we have been covering in this course.\u00a0 \u00a0The body has multiple defenses against pathogens, involving multiple organ systems.<\/h6>\n<h6 style=\"text-align: center;\"><strong>This video provides an overview of the human defenses against pathogens and parasites.<\/strong><\/h6>\n[embed]https:\/\/vimeo.com\/420883723[\/embed]\n<h3>Here are four organ systems involved in the response against pathogens.<\/h3>\n<img src=\"http:\/\/naturejournals.org\/wp-content\/uploads\/2019\/08\/skin-a-1024x793.jpg\" width=\"1024\" height=\"200\" title=\"Integumentary System\" alt=\"\"> <h3> Integumentary System <\/h3> Skin and secretions like tears and urine are a barrier against pathogens. Mucus-membranes line the trachea to trap and move pathogens up and out of the respiratory system.\n<img src=\"http:\/\/naturejournals.org\/wp-content\/uploads\/2019\/08\/bone-marrow-b-1024x697.jpg\" width=\"1024\" height=\"200\" title=\"Skeletal System\" alt=\"\"> <h3> Skeletal System <\/h3> The bone marrow produces white blood cells and each cell can destroy pathogens in different ways.\n<img src=\"http:\/\/naturejournals.org\/wp-content\/uploads\/2019\/08\/vessel-1024x682.jpg\" width=\"1024\" height=\"200\" title=\"Cardiovascular System\" alt=\"\"> <h3> Cardiovascular System <\/h3> Some white blood cells travel through the blood to distant locations like the thymus and lymph nodes, while others patrol the blood in search of pathogens.\n<img src=\"http:\/\/naturejournals.org\/wp-content\/uploads\/2019\/08\/lymph-node-b-1024x925.jpg\" width=\"1024\" height=\"200\" title=\"Lymphatic System\" alt=\"\"> <h3> Lymphatic System <\/h3> Some white blood cells monitor pathogens that may have accumulate in the lymph (extracellular fluid). Lymphocytes wait in lymph nodes, prepared to pounce on pathogens.\n<h2>These organ systems form four lines of defense<\/h2>\n<p>Two non-specific and two specific defenses.<\/p>\n<em style=\"color:#ffffff\"><svg xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" aria-hidden=\"true\"><use href=\"#tf-ti-hand-stop\" xlink:href=\"#tf-ti-hand-stop\"><\/use><\/svg><\/em> \n <h3> Barriers <\/h3> <p>skin, mucus membranes, and secretions keep pathogens out of the body.<\/p>\n<em style=\"color:#ffffff\"><svg xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" aria-hidden=\"true\"><use href=\"#tf-fas-fire-alt\" xlink:href=\"#tf-fas-fire-alt\"><\/use><\/svg><\/em> \n <h3> Inflammation <\/h3> <p>permeable blood vessels bring in platelets and white blood cells.<\/p>\n<em style=\"color:#ffffff\"><svg xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" aria-hidden=\"true\"><use href=\"#tf-fas-cookie\" xlink:href=\"#tf-fas-cookie\"><\/use><\/svg><\/em> \n <h3> Cell-mediated Immunity <\/h3> <p>white blood cells seek out and destroy cells infected with specific pathogens.<\/p>\n<em style=\"color:#ffffff\"><svg xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" aria-hidden=\"true\"><use href=\"#tf-fas-sticky-note\" xlink:href=\"#tf-fas-sticky-note\"><\/use><\/svg><\/em> \n <h3> Antibody-mediated Immunity <\/h3> <p>white blood cells produce antibodies that stick to specific pathogens.<\/p>\n[embed]https:\/\/vimeo.com\/421163464[\/embed]\n<p style=\"text-align: left;\"><b>This is a quick look at the four basic defenses, two that are non-specific (barriers and inflammation) and two that are specific involving T Lymphocytes (T cells) killing infected cells and B lymphocytes (B cells) producing antibodies.<\/b><\/p>\n<h5>Two lines of defense are non-specific, pre-programmed and similar responses to any potential pathogen.<\/h5>\n<img src=\"http:\/\/naturejournals.org\/wp-content\/uploads\/2019\/08\/skin-b-1024x941.jpg\" width=\"1024\" height=\"300\" title=\"Barriers\" alt=\"\"> <h3> Barriers <\/h3> Structures and chemicals keep pathogens from entering the body.\n<img src=\"http:\/\/naturejournals.org\/wp-content\/uploads\/2019\/08\/t-cell-normal-1-1024x717.jpg\" width=\"1024\" height=\"300\" title=\"Inflammation\" alt=\"\"> <h3> Inflammation <\/h3> Wounded cells release chemicals that dilate blood vessels and bring in blood to clean the wounded area. The next section describes inflammation in detail.\n<h3 style=\"text-align: center;\">Barriers<\/h3>\n[embed]https:\/\/vimeo.com\/421361517[\/embed]\n<p style=\"text-align: left;\"><b>The skin is a very effective barrier, but even shallow abrasions to the epidermis could lead to an infection.<\/b><\/p>\n<p style=\"text-align: left;\"><b>Mucus is a critical barrier secretion in the respiratory system, but excessive mucus can result in a variety of disorders, including sinusitis.<\/b><\/p>\n[embed]https:\/\/vimeo.com\/421362277[\/embed]\n<h6>The next section provides an overview of inflammation, another non-specific defense.<\/h6>\n<img src=\"https:\/\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg\" title=\"1\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?w=2000&amp;ssl=1 2000w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=300%2C216&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=1024%2C738&amp;ssl=1 1024w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=768%2C553&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/05\/1-4.jpg?resize=1536%2C1107&amp;ssl=1 1536w\" sizes=\"(max-width: 2000px) 100vw, 2000px\" \/>\n<h5>Check your knowledge.\u00a0 Can you:<\/h5>\n<ul> <li> <h6>describe how the integumentary system, cardiovascular system, skeletal system, and lymphatic system play a role in defense?<\/h6> <\/li> <li> <h6>list the two non-specific innate defenses and the two specific acquired defenses?<\/h6> <\/li> <li> <h6>provide examples of barriers that keep pathogens and parasites out of the body?<\/h6> <\/li> <\/ul>\n<a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/#\"> <img src=\"https:\/\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon-100x100.jpg\" width=\"100\" height=\"100\" title=\"Guide Icon\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=768%2C768&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?w=1000&amp;ssl=1 1000w\" sizes=\"(max-width: 100px) 100vw, 100px\" \/> <\/a>\n<h3>Go back to the Defense Systems Guide Overview<\/h3>\n<a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/inflammation\/#\"> <img src=\"https:\/\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square-100x100.jpg\" width=\"100\" height=\"100\" title=\"Number 2 orange square\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=768%2C772&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?w=995&amp;ssl=1 995w\" sizes=\"(max-width: 100px) 100vw, 100px\" \/> <\/a>\n<h3>Go forward to the Inflammation Page<\/h3>\n<h3>Defense Systems Lecture Guide Contents<\/h3>\n\n<h6>The material from this guide and corresponding lecture is assessed on the weekly quiz.<\/h6>\n<img src=\"https:\/\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square-200x200.jpg\" width=\"200\" height=\"200\" title=\"Overview &amp; Barriers - YOU ARE HERE\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=768%2C772&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-1-orange-square.jpg?w=995&amp;ssl=1 995w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/> <h3> Overview & Barriers - YOU ARE HERE <\/h3>\n<a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/inflammation\/#\"> <img src=\"https:\/\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square-200x200.jpg\" width=\"200\" height=\"200\" title=\"Inflammation\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=768%2C772&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-2-orange-square.jpg?w=995&amp;ssl=1 995w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/> <\/a> <h3> <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/inflammation\/#\"> Inflammation <\/a> <\/h3>\n<a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/cell-mediated\/#\"> <img src=\"https:\/\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square-200x200.jpg\" width=\"200\" height=\"200\" title=\"Cell-Mediated\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?resize=768%2C770&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-3-orange-square.jpg?w=997&amp;ssl=1 997w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/> <\/a> <h3> <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/cell-mediated\/#\"> Cell-Mediated <\/a> <\/h3>\n<a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/antibody-mediated\/#\"> <img src=\"https:\/\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square-200x200.jpg\" width=\"200\" height=\"200\" title=\"Antibody-Mediated\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?resize=200%2C200&amp;ssl=1 200w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?resize=768%2C770&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Number-4-orange-square.jpg?w=997&amp;ssl=1 997w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/> <\/a> <h3> <a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/antibody-mediated\/#\"> Antibody-Mediated <\/a> <\/h3>\n<a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/#\"> <img src=\"https:\/\/humanbio.org\/wp-content\/uploads\/2020\/03\/Module-Icon-100x100.jpg\" width=\"100\" height=\"100\" title=\"Module Icon\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Module-Icon.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Module-Icon.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Module-Icon.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Module-Icon.jpg?resize=768%2C772&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Module-Icon.jpg?w=995&amp;ssl=1 995w\" sizes=\"(max-width: 100px) 100vw, 100px\" \/> <\/a>\n<h3>Back to Module 9<\/h3> <h5>This week's overview<\/h5>\n<a href=\"https:\/\/humanbio.org\/index.php\/campus-humanbio\/defenses\/systems\/#\"> <img src=\"https:\/\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon-100x100.jpg\" width=\"100\" height=\"100\" title=\"Guide Icon\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?resize=768%2C768&amp;ssl=1 768w, https:\/\/i0.wp.com\/humanbio.org\/wp-content\/uploads\/2020\/03\/Guide-Icon.jpg?w=1000&amp;ssl=1 1000w\" sizes=\"(max-width: 100px) 100vw, 100px\" \/> <\/a>\n<h3>This Guide<\/h3> <h6>Defense Systems<\/h6>\n<a href=\"https:\/\/oregonstate.instructure.com\"> <img src=\"http:\/\/vividscience.org\/wp-content\/uploads\/2018\/10\/Screen-Shot-2018-10-14-at-10.32.37-PM-3.png\" width=\"100\" height=\"368\" alt=\"\"> <\/a>\n<h3>Direct Link to Canvas<\/h3> <h5>Submit Products<\/h5>","_links":{"self":[{"href":"https:\/\/humanbio.org\/index.php\/wp-json\/wp\/v2\/pages\/7711","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/humanbio.org\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/humanbio.org\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/humanbio.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/humanbio.org\/index.php\/wp-json\/wp\/v2\/comments?post=7711"}],"version-history":[{"count":5,"href":"https:\/\/humanbio.org\/index.php\/wp-json\/wp\/v2\/pages\/7711\/revisions"}],"predecessor-version":[{"id":7743,"href":"https:\/\/humanbio.org\/index.php\/wp-json\/wp\/v2\/pages\/7711\/revisions\/7743"}],"up":[{"embeddable":true,"href":"https:\/\/humanbio.org\/index.php\/wp-json\/wp\/v2\/pages\/7650"}],"wp:attachment":[{"href":"https:\/\/humanbio.org\/index.php\/wp-json\/wp\/v2\/media?parent=7711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}