BIOL 240 Lecture Notes - Lecture 30: Tonsillitis, Bloodborne, Mucosa-Associated Lymphoid Tissue
Document Summary
Functions: transports excess of interstitial fluid, serves as route by which absorbed fat from the intestine is transported to blood, lacteals, provides immunological defenses, returns leaked proteins to blood to help maintain osmotic pressure in blood vessels. Formed as filtrate if plasma through blood capillaries. Similar to [plasma except with low protein concentration. Edema results it system is blocked or surgically removed (cid:862)lymph(cid:863) is the fluid. Chronic lymphatic edema: fluid retention and swelling of tissues. May be causes by parasitic worm that enter via a mosquito bite. Eight nematode species that attack lymphatic system. Have one way mini-valves allowing excess fluid to enter but not leave. Picks up bacteria and viruses as well as proteins, electrolytes, and fluid: lymph nodes destroy most pathogens. Absent in bone, bone marrow, teeth, cns. Similar to blood vessels (3 layers), but thin and delicate. Superficial ones in skin travel with superficial. Bean shaped organs along lymphatic collecting vessels. Drainage: subclavian and internal jugular veins.
