Lymphatic System Immunity

Lymphatic System & Immunity

From:

Anatomy And Physiology - From Science to Life Gail W. Jenkins

9780470448724 

Human Body Systems 2 (BMSC11002) Central Queensland University 1 / 3

Contents Lymphatic System Overview.......................................................................2 Lymph Flow..................................................................................................3 Lymphatic Organs........................................................................................3 Innate Immunity..........................................................................................4 Complement System...................................................................................4 Adaptive Immunity......................................................................................5 T Cells and B Cells.......................................................................................5 Antibodies....................................................................................................6 Immunological Memory...............................................................................6 Acquiring Immunity.....................................................................................6 Complementary Details...............................................................................7 Defense Mechanisms Summary ..................................................................7 Lymphatic Tissues and Immunity................................................................7 Miscellaneous..............................................................................................7 Deep Immunology.......................................................................................8 Actual test questions NO answers...............................................................9 Lymphatic System Overview 1.What is the function of the lymphatic system?It drains interstitial fluid, transports dietary lipids, and protects against invasion.

2.What is lymph?Lymph is a clear fluid, similar to interstitial fluid and blood plasma.

3.What are lymphatic vessels?They transport lymph from interstitial fluid back into the blood.

4.What is lymphatic tissue?A specialized form of reticular connective tissue containing lymphocytes.

5.What are the primary functions of the lymphatic system?oDraining excess interstitial fluid.oTransporting dietary lipids and fat-soluble vitamins. 2 / 3

oCarrying out immune responses.Lymph Flow 6.What are lymphatic capillaries?Tiny vessels between cells that pick up excess interstitial fluid.

7.What is the sequence of lymph flow?Blood capillaries → Interstitial spaces → Lymphatic capillaries → Lymphatic vessels → Lymph nodes → Lymphatic ducts → Blood.

8.What are lymphatic trunks?Large vessels that drain lymph from different body regions.

9.Name the main lymphatic trunks.Lumbar, intestinal, bronchomediastinal, subclavian, and jugular trunks.

• What are the two main lymphatic ducts?

oThoracic duct: Drains most of the body.

oRight lymphatic duct: Drains the upper right portion of the

body.Lymphatic Organs

• What are the primary lymphatic organs?

The thymus and red bone marrow.

• What happens in the thymus?

T cells mature, and immature T cells are "educated" to distinguish self from non-self molecules.

• What are lymph nodes?

Small, bean-shaped structures that filter lymph and house immune cells.

• What is the function of the spleen?

oFilters blood.oRemoves aged/damaged blood cells.oStores platelets.oProduces blood cells in the fetus.

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