lymphatic system Word Scramble
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Term | Definition |
functions of the lymphatic system | 1) alternate pathway fro extracellular fluid to return to to circulation 2) waste materials to be removed from tissues and organs and destroyed 3) protective lining along internal organs which are exposed to the environment |
functions of lymphatic system part 2 | 3) protective lining along internal organs which are exposed to the environment 4) provide places for surveillance, proliferation and maturation of lymphocytes and other immune cells |
lymphatic system | network of lymphatic vessels; lymphatic organs- spleen & lymph nodes; lymphatic tissue- tonsils; lymphatic cells dispersed through walls of many organs |
lymph vessels | concentrated in cervical region, along aorta in thorax and abdomen, axillia and inguinal region |
lymph nodes | individual organs; fluid flows IN through AFFERENT vessels; fluid EXITS through EFFERENT vessels; specifically looking for antigens of something you've been exposed to |
lymphatic organs and tissues | spleen & thymus; tonsils, appendix, digestive system, trachea, bronchi, bronchioles, vagina, urethra |
spleen | inferior to diaphragm on left side of abdomen; large blood supply through splenic artery; two types of tissue- red pulp and white pulp |
red pulp | produces erythrocytes in fetus and newborn; reservoir for erythrocytes and platelets |
white pulp | contains lymphocytes and macrophages; removes bacteria, viruses, debris from blood; removes old and damaged erythrocytes |
thymus | superior thorac, anterior to aorta and posterior to sternum; large in children, small in adults; secretes hormones which cause undifferentiated lymphocytres to mature in "thymic-derived" lymphocytes |
lymphoid tissue | line many hollow organs exposed to bacteria, viruses, etc.; located deep to epithelia, easily exposed to antigens; secrete antibodies into and across epithelia into lumen |
Created by:
shill14
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