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341 Chpt 16
Lymphatic system
Question | Answer |
---|---|
3 Functions of lympatic system | Return excess IS fluid to blood, transport digested lipids to blood via lacteals, help provide immunity |
Names of lymphatic vessels (smallest to largest) | capillaries, vessels, trunks, ducts |
Thoracic duct | Drains lymph from most of body and empties in left subclavian vein |
Right Lymphatic duct | drains head and upper right portion of body and empties into the right subclavian vein |
Red bone marrow | Mature B cells, immature T cells |
Thymus gland | Mature T cells |
Primary lympatic organs | Sites of lymph cell production and maturation |
Secondary lympatic organs | Sites of immune activity (lymph nodes, nodules, spleen) |
Lymph nodes | Lymph tissue covered by capsule. Lymph is cleaned and filtered. |
Lymph nodules | Masses of lymph tissue without capsule (tonsils, peyer's patches, and appendix) |
Spleen | Large mass of lymphatic tissue with thick capsule |
Stroma | Outer portion of spleen |
Parenchyma | Inner portion of spleen |
White pulp | Mostly lympocytes and macrophags (cleans and filters) |
Red pulp | Venous sinuses, immune cells remove old, damaged RBC from blood, and store platelets until needed |