Urinary+System+EP

(1) What are the organs of the urinary system, and what are their functions? (2) In what four ways do the kidneys help maintain homeostasis? (3) What are the three major areas of the kidney? (4) What microscopic structure is responsible for the production of urine?
 * Kidneys- produce urine.
 * Ureters- transport urine.
 * Urinary bladder-stores urine.
 * Urethra-passes urine outside.
 * Excretion of metabolic wastes
 * maintenance of water-salt balance
 * Maintenance of acid-base balance
 * Secretion of hormones
 * renal cortex
 * renal medulla
 * renal pelvis
 * Nephrons produce urine and are placed so that the urine can flowinto a collecting duct.

(5) How do the parts of the nephron differ?
 * the glomerular capsule has two layers: the outer layer is composed of cells and the inner layer is made of podocytes which hang on to the walls and leaves pores for molecules to travel through.
 * the proximal convoluted tubule are cells that line the nephron.
 * the loop of the nephron allows water to leave in one limb and extrude salt in the other limb.
 * the distal convoluted tubule can move molecules from the blood into the tube allowing nephrons to enter.