PSL201Y1 Chapter Notes -Baroreceptor, Capillary Pressure, Microvillus
Document Summary
Kidneys filter blood, and produce urine (fluid that is eliminated from the body). Urine contains metabolic by-products and other substances properly described as wastes ; it also contains water and solutes (na, k) that must be maintained at certain levels in the plasma and other body fluids. Kidney"s perform the following primary functions: regulation of plasma ionic composition: increasing/decreasing excretion of specific ions regulates [ions] in the plasma (na, k, ca, mg, cl, hco3. Kidneys also regulate the volume and composition of the interstitial fluid, which effects the intracellular fluid. Thus the kidneys ultimately control the volume and composition of all body"s fluids. Urinary system: 2 kidneys, 2 ureters, urinary bladder, and urethra. Urine is conducted into the bladder by the ureters. Bladder stores urine until it is time to excrete it. Urine moves through the urethra and out of the body. They lie near the rear wall of the abdominal cavity just above the waistline.
