NURS140 Lecture Notes - Lecture 9: Lymphatic Vessel, Extracellular Fluid, Capillary

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List the major structures involved in the lymphatic system. State the purpose of the lymphatic system: describe the major pattern of lymphatic drainage and its relationship with blood, discuss the role of immune cells and types of immunity. Lymphatic vessels: start at or pass through lymph tissues and organs. Causes differentiation of lymphocytes resulting in: t cells, b cells, and nk cells. Secondary lymphoid structures (lymph nodes, spleen and (lymphatic nodules)tonsils) Consist of lymphocytes and more b cells to battle infectious agents. Lymphocyte production, maintenance and distribution (central to immune function) Ensuring stable blood volume and comparable interstitial composition throughout the body. Assists in transport of hormones, nutrients and waste products. The major pattern of lymphatic drainage begin with capillaries: combine to form lymphatic vessels. Lymphatic capillaries: close-ended tubes found amongst blood capillary network larger diameter thinner walls present in almost all tissues except in areas with no blood supply bone marrow, cns.

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