Chapter 7- Urinary System

Question 1

What is the function of the kidneys?

Answer 1

Remove nitrogenous wastes: urea, creatinine and uric acid

Balance, water, and electrolytes (sodium and potassium)

Release substances: renin, erythropoietin, calciferol

Degrade and eliminate hormones from bloodstream stream

Question 2

What is the function of the ureters?

Answer 2

Ureters carry urine in peristaltic waves from the kidneys to the urinary bladder

Question 3

What is the function of the urinary bladder?

Answer 3

Temporary Resivoir for urine

Question 4

What is the function of the urethra? (Make and female differences)

Answer 4

Male: 8 inches long, extends downward through the prostate gland to urinary meatus, at tip of the penis

FEMALE: 2 inches long, lies anterior to the vagina

Tube that carries urine from urinary bladder to outside of body

Question 5

How do kidneys produce urine?

Answer 5

Kidneys produce urine by filtration, the thin walls of the glomerulus permit water, salts, sugar and urea to leave bloodstream. These materials then collect in a tiny cup like structure called the bowman’s capsule

The active process reabsorption ensures that the body retains essential substances such as sugar, water, and sodium while allowing waste products to be excreted in the urine

The final process in the formation of urine is secretion of some substances such as potassium, acids and drugs from the bloodstream into the renal tubule