Urinary+System+HW+CC

Urinary System Homework p.189 (1) What are the organs of the urinary system, and what are their functions? - The three main organs of the Urinary System are the kidneys, the ureters, and the urinary bladder. The Kidneys purpose is to excrete metabolic wastes, including urea. The Ureters create a pathway for the urin to go from the kidneys to the bladder. The Urinary bladder holds urine until it is ready to be released from the body.

(2) In what four ways do the kidneys help maintain homeostasis? 1. They excrete urea, and other nitrogenous wastes. 2. They maintain a consistent balance between water and salt. 3. They maintain a balance of acid in the blood. 4. They help to maintain hormone levels by excreting them.

(3) What are the three major areas of the kidney? 1. Renal Cortex 2. Renal Medulla 3. Renal Pelvis

(4) What microscopic structure is responsible for the production of urine? - Kidneys are made up of nephrons which are microscopical. Their main purpose is to produce urine.

(5) How do the parts of the nephron differ? 1. The Glomerular capsule is the closed end of a nephron. 2. The Procimal convoluted tubule have brush like things on them allowing it to be easier to absorb and take in water. 3. The Loop of the nephron is where the tube narrows and turns in to a U like shape. Each tube has a limb that allows water to escape. 4. The Distal Convoluted tubule focuses on moving molecules from the blood in to the tubule. It does not absorb water as well.