BIOL 205 Lecture Notes - Lecture 29: Urethral Sphincters, Interlobular Arteries, Renal Papilla
Document Summary
Kidneys (filter and process waste from blood), urinary tract. Renal arteries bring in nitrogenous waste (ammonia) and convert it into urea (nontoxic form) filtered out of kidney ureter (clean blood goes in another direction) o. Store urine. (as much as a liter of urine) Regulate erythrocyte production. (by indirectly sensing amount of oxygen, triggers bone marrow o o o o o o o o o o o o o o o o o o o o o o o production) Renal lobes (1 renal pyramid and surrounding renal cortex) Renal papilla of renal medulla (primarily composed of renal pyramids) Renal papilla minor calyx major calyx renal pelvis ureter. Mucosa = transitional epithelium (allows bladder to distend to store urine) Urinary bladder (expandable, muscular pouch, stores urine) retroperitoneal. Four tunics that form the wall of the bladder. Detrusor muscle = tunica muscularis in urinary bladder. Internal urethral sphincter muscles as base of urinary bladder formed from detrusor muscle (involuntary)
