Lymphatic System (Final Exam) – Flashcards
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lymph
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interstitial fluid derivative
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lymphatic system
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includes lymph capillaries, lymph vessels, and lymphatic cells and organs
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immunity/disease response, auxiliary circulatory system
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2 main function of the lymphatic system
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lymphatic system immunity/disease response functions
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maturation and replication of lymphocytes, filters lymph
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lymphatic system auxiliary circulatory system functions
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-fluid from blood capillaries diffuses into tissues (interstitial fluid); only 85% can return to blood via blood capillaries
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edema
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swelling that occurs when fluids do not drain
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lymph
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excess fluids drained by lymphatic system
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lacteals
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lymphatic capillaries associated w/digestive system; collect fats
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right lymphatic duct, thoracic duct
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2 main lymph ducts
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right lymphatic duct
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drains upper right quadrant of body
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thoracic lymph duct
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drains rest of body (everything besides the upper right quarant)
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subclavian veins
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where both the right and thoracic lymph ducts drain
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large proteins, fats, immune system cells; cancer cells, bacteria
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Lymphatic system allows entry for substances that are too large to enter blood via blood capillaries, good and bad. Good: _____. Bad: _______.
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lymph nodules
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oval clusters of lymphatic cells (not organs); immune system cell production, may occur in groups (e.g. tonsils); may also occur as part of lymph organs (e.g. in the cortex of lymph nodes, a type of lymph organ)
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tonsils
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masses of lymph nodules in nasal and oral cavities and in pharynx.
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lymph nodes
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bean-shaped organs, occur along lymph vessels (often in clusters) throughout body; contain a capsule (covering), cortex (outer), and medulla (middle/center);
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sinuses
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irregular channels, lymph circulates/filtered here; component of lymph nodes
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lymph nodes, spleen, thymus, red bone marrow
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list the four main types of lymph organs
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lymph nodules
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contained in the cortex of lymph nodes
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cervical (neck), axillary (armpit), inguinal (groin)
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list the three main clusters of lymph nodes
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spleen
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Organ of the lymphatic system containing lymph nodules; monitors and filters blood (not lymph); nonessential in adults, essential in children
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yes, no
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Does the spleen filter blood? Does it filter lymph?
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thymus
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Organ of the lymphatic system containing lymph nodules; where T lymphocytes (many types) mature.
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red bone marrow
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Organ of the lymphatic system, contains hemoblasts
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hemoblasts, B cells, T cells
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immature (precursor) lymphocytes; 2 types, what are they?
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B cells, B lymphocytes
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remain in bone marrow and mature there; migrate throughout body (other lymphatic tissue), divide as needed into _________--> antibodies
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T cells, T lymphocytes
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leave red bone marrow in immature state during fetal and neonatal life, migrate to thymus where they mature; after maturing, can migrate to other lymphatic tissues; will divide as needed to form _______.
