Chapter21LymphImmuneMarieb

Chapter21LymphImmuneMarieb - Chapt 21: The Lymphatic and...

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Chapt 21: The Lymphatic and Immune Systems Goals 1. Discuss the organization of the lymphatic system, including the vessels, principal lymph nodes, thymus, and spleen 2. Explain the relationship between the lymphatic and circulatory systems, and the role of lymphoid tissue structures and lymphocytes in the body’s defense 3. An introduction to the Immune System Developed by John Gallagher, MS, DVM
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Overview of the Lymphatic System Includes, vessels, fluid, and nodes or nonsecreting "glands". Lymphatic vessels convey fluid from the periphery to the veins. The fluid, lymph (=clear water), is what seeps out of the blood at the peripheral capillaries. Composition is similar to plasma without as much protein Fig 20.1
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Overview of the Lymphatic System Lymphatic organs or tissues ("glands” is a misnomer) are filtering areas and arenas of lymphocyte maturation and competency. Accessory to cardiovascular system, thus there are two drainage systems. Fig 20.1
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1. Filtration of lymph 2. Return of leaked fluid to cardiovascular system 3. “Education” and production of immune system lymphocytes 4. Transport of digested lipids from small intestinal lacteals Major Functions of the Lymphatic System
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Thin walled endothelium (no BM) with periodic one way valves. In general ,they parallel veins. Usually
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This note was uploaded on 12/16/2011 for the course BIOLOGY 101 taught by Professor Mr.wallace during the Fall '11 term at Montgomery College.

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Chapter21LymphImmuneMarieb - Chapt 21: The Lymphatic and...

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