Urinary+System+HW+MA

Urinary System Homework p.189 (Copy and paste questions on to a unique wiki page. Pictures are good. Make this look good too. Original Wording) (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? (5) How do the parts of the nephron differ?
 * Kidney's: located on both sides of the vertebrae and are bean shaped and reddish brown. Their exterior is covered with fibrous connection tissue called a renal capsule. A renal artery enters the concave side of the kidney where there is a depression and a renal vein and ureter exit the kidney.
 * Ureters: Move urine from the kidneys to the bladder. The wall has three layers 1) an inner mucosa 2) a smooth muscle layer 3)outer fibrous coat of connective tissue.
 * Urinary Bladder: Holds urine until it leaves the body. Has three openings, two for the ureters and one for the urethra.
 * Urethra: extends from the urinary bladder to an external opening. It removes urine from the body.
 * The kidneys rid toxic wastes and creates balance of water-salt and acid-base of the blood.
 * 1) Renal Cortex: outer granulated layer that dips down into another layer called the renal medulla.
 * 2) Renal Medulla: made of cone shaped tissue masses called renal pyramids
 * 3) Renal Pelvis: central space of the kidney that is continuous with the ureter.
 * Nephrons
 * Closed end of the nephron to form a cuplike structure called the glomerular capsule. This produces a filtrate of the blood.
 * Proximal convoluted tubule: supplies energy active transport of molecules from the lumen to the peritubular capillary network.
 * Loop of the nephron: allows water to leave and an ascending limb that extrudes salt.
 * Distal convoluted tubule: participates in moving molecules from the blood into the tubule