HN220 Chapter Notes - Chapter 18: Renal Function, Renal Pyramids, Lithotripsy
Document Summary
Urine contains water and solutes that need to be maintained in the plasma. Water and small solutes are freely exchanges b/w plasma and interstitial fluid throughout the body, kidneys regulate volume and composition of the plasma they likewise regulate the volume and composition of interstitial fluid. Kid(cid:374)e(cid:455)s ulti(cid:373)atel(cid:455) (cid:272)o(cid:374)trol the (cid:448)olu(cid:373)e a(cid:374)d (cid:272)o(cid:373)positio(cid:374) of all the (cid:271)od(cid:455)"s fluids. Considered endocrine organs as they secrete the hormone erythropoietin (stimulate erythrocyte production by bone marrow) and the enzyme renin. Also necessary for the activation of vitamin d3, an important factor in regulating blood calcium and phosphate levels. They can also function during periods of fasting to maintain a steady supply of plasma glucose by carrying out gluconeogenesis, molecules like glycerol and aa are used to synthesize glucose. Once formed by the kidneys urine is sent to the bladder and ureters. Urine is they moved to the urethra to be excreted.
