Week 7 2402 Lab Lymphatic System_students.pptx - 2402 Week...

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2402 Week 7 Goldfish Circulation Handout Unit 21: Lymphatics & Immunity Exercises 1-4
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Unit 20: Lymphatic System What is immunity or resistance? Ability to ward off damage or disease through our defenses What is susceptibility? Lack of resistance What are the two basic types of immunity? 1. Innate or nonspecific immunity – present at birth No specific recognition of invaders, no memory component 1 st and 2 nd line of defenses 2. Adaptive or specific immunity (acquired) Specific recognition of invaders with a memory component 3 rd line of defense
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What are the functions of the lymphatic system? 3 Drain excess interstitial fluid and returns it to the blood Regulates blood pressure Transport dietary lipids & lipid soluble vitamins from GI tract to blood Facilitates immune response
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Describe the lymphatic capillaries: 4 One-way system Closed-ended tubes Located btwn cells “All vessels lead to the heart” Capillaries vessels nodes ducts/ trunks Found all over body Except avascular tissue In GI tract Lacteals – Deliver chyle to blood Dietary fats
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Lymph Trunks & Ducts 5 Main trunks = lumbar, intestinal, bronchomediastinal, subclavian & jugular R lymphatic duct R subclavian vein Thoracic duct (L lymphatic duct) L subclavian vein Cisterna chyli
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Differentiate the primary & secondary lymphatic organs 6 Primary
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