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Unformatted text preview: Lymphatic vessels Lymphoid tissues and organs Lymphocytes and supporting phagocytic cells Functions of lymphatic system Primary function is production, maintenance, and distribution of lymphocytes Lymphocytes must: Detect where problems exist Be able to reach the site of injury or infection Lymphatic vessels include Lymphatic capillaries Small lymphatic vessels Major lymph-collecting vessels Major lymph-collecting vessels Superficial and deep lymphatics Thoracic duct Cisterna chyli Right lymphatic duct Lymphocytes Three classes of lymphocytes T ( t hymus dependent) cells B ( b one marrow-derived) cells NK ( n atural k iller) cells Lymphocyte production (lymphopoiesis) Involves bone marrow, thymus, and peripheral lymphoid tissue B cells and NK cells mature in bone marrow T cells mature in the thymus...
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