ANP 1105 Lecture Notes - Lecture 6: Immunocompetence, Bronchus, Thymosin

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When fluid pressure builds up in tissues, it puts pressure on the structure and creating larger spaces between the endothelial cells. Capilarries are much more permeable than cardiovascular system. Lymphocytes: t-cells (manage immune response; some are soldiers) & b-cells ( plasma cells produce antibodies to get rid of harmful bacteria present in the body) cell to cell attack (t-cells) Medulla: medullary cords & large lymph sinuses, t cells and b cells, slow fluid flow. Note the one-way flow of traffic through each lymph node. Fewer efferent pathways allow time fo the lymphocytes and macrophages to carry out their protective functions. Other lymphoid organs: like lymph nodes composed of reticular ct, but only lymph nodes filter lymph; other organs have only efferent lymphatics, spleen, largest lymphoid organ; beneath diaphragm. 3) site for lymphocyte proliferation; immune surveillance & response blood cleansing stores rbc products (iron) for recycling (also platelets and monocytes)

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