Urinary+System-PK

__//**The Urinary System**//__



(1) What are the organs of the urinary system, and what are their functions?

1. The urinary system contains the kidneys, the ureters, the urinary bladder and the urethre. The kidneys removes the metabolic wastes from the body. and maintain homeostasis. The ureters navigate the urine from the kidneys to the bladder. The urinary bladder stores urine until it is released from the body. The urethra transports urine from out of the body.

(2) In what four ways do the kidneys help maintain homeostasis?

2. The kidneys maintain homeostasis through the excretion of metobolic wastes, mainting the water-salt balance, maintaining the acid-base balance and secret hormones.

(3) What are the three major areas of the kidney?

3. The three major areas of the kidney are the renal cortex, the renal medulla and the renal pelvis.

(4) What microscopic structure is responsible for the production of urine?

4. The nephrons produce urine.

(5) How do the parts of the nephron differ?

5. The glomerular capsul is the cuplike structure of the nephron that filters the blood. The proximal convoluted tubule form tiny brushes that increase the surface area of the kidneys. The loop of the nephron allows water to leave and extrude salt. The distal convuted tubule move molecules from the blood into the tube. The collecting ducts carry urine into the renal pelvis area.