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15 Cards in this Set
- Front
- Back
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Functions of the lymphatic system |
-maintain fluid balance -immunity -transport tissue fluid, proteins, fats, & other substances |
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Components of the lymphatic system |
-lymph -lymphatic vessels -lymph nodes -lymphocytes -lymphoid organs |
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Lymph |
-clearish, slightly yellow tinted liquid similar to plasma, although not as many proteins as plasma -an isotonic fluid |
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Lymphatic vessels |
-similar to veins but have valves to permit 1 way only travel of lymph -thin walls -found anywhere there is capillaries except teeth, bones, bone marrow & the CNS -group of lymphatic vessels is a lymphatic plexus & plexuses contain whole cells |
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Functions of lymph vessels |
-remove particulate matter -absorb fat & nutrients from small intestine |
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Lymph nodes
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-Small masses of tissue along lymph vessels -they filter lymph on its way to the venous system (defense) - help with hematopoiesis -if overwhelmed lymph nodes swell and can become infected |
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Lymphocytes
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Immune cells circulate throughout the body and react against foreign materials |
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Lymphoid organs
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Parts of the body that produce lymphocytes
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Types of lymphoid organs
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Aggregated nodules: found in alimentary (digestive) tract -appendix -thymus -red bone marrow: hematopoiesis -spleen -tonsils |
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Thymus |
primary lymphoid organ, it helps to differentiate lymphocytes into T cells (immunity) |
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Functions of the spleen |
-defense -hematopoiesis -RBC & platelet destruction -blood reservoir |
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Functions of the tonsils |
protection against bacteria that may invade from the oral & nasal cavities |
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Lymphoid systems groups
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-pre-auricular -submental -submaxilar -superficial cervical -superficial cubital -axillary -iliac -inguinal |
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Distribution of lymphatics in the breast |
drained by 2 sets of vessels, one superficial & one deep |
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True |
T or F 85% of lymph from the breast enters the lymph nodes of the axillary region, remainder enters lymph nodes along lateral edges of sternum |
