BSC 2085C Lecture Notes - Urinary Bladder, Renal Artery, Muscular System
Document Summary
The urinary system organs are all retroperitoneal. Organs: kidney, ureter, transports urine toward the urinary bladder, urinary bladder, stores urine, urethra, conducts urine to exterior. Kidneys: two kidneys, retroperitoneal (posterior to the peritoneum, partially protected by the 11th and 12th pairs of ribs, the right kidney is slightly lower than the left because the right lobe of the liver is large and. Lies between t12 and l3 extends further inferiorly: each kidney is about 10-12 cm (4-5 inches) long; 5-7cm (2-3 inches) wide; and 3 cm (1 inch) thick. In the distal convoluted tubules, reabsorption of calcium is largely regulated by levels of parathyroid hormone: once it gets to the papillary duct no more reabsorption is occurring, urine comes out papillary ducts, number of nephrons. Is constant from birth we are born with all our nephrons: any increase in kidney size due to growth of nephrons, not increase in number.
