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\.Functions of the lymphatic system - ANSWERS✔--fluid recovery
-immunity
-lipid absorption
\.lymph - ANSWERS✔-the recovery fluid picked up by lymphatic vessels from the
blood capillaries
\.chyle - ANSWERS✔-lymph containing high lipid content because of lipids
draining from lacteals in small intestines after a meal
\.lymphatic vessels - ANSWERS✔-transport the lymph
\.lymphatic tissues - ANSWERS✔-composed of aggregates of lymphocytes and
macrophages that populate many organs of the body
\.what is the route of lymph back to the bloodstream? - ANSWERS✔--lymphatic
capillaries
-collecting vessels
, -lymphatic trunks
-collecting ducts
-subclavian veins
\.lymphatic capillaries - ANSWERS✔--closed at one end
-composed of thin endothelial cells which create valvelike flaps that open when
interstitial fluid pressure is high, and close when it is low
\.how many layers do lymphatic vessels have? - ANSWERS✔-three
\.what are the three layers of lymphatic vessels - ANSWERS✔--tunica interna
(composed of endothelium and valves)
-tunica media (composed of elastic fibers and smooth muscle)
-tunica externa (thin outer layer)
\.collecting vessels of lymphatic system - ANSWERS✔--often travel alongside
arteries and veins
-pass through many lymph nodes
\.how many lymphatic trunks are located in the body? - ANSWERS✔-six
\.what do the lymphatic trunks do? - ANSWERS✔-drain the major portions of the
body