25. The Urinary System

Which of the following is a possible consequence of a prolonged or chronic decrease in glomerular filtration rate?

The ________________ is the finest layer of the filtration membrane.

Net filtration pressure in most capillary beds favors:

a. Absorption

b. Osmosis

c. Filtration

d. Secretion

The glomerular capillaries differ from other capillary networks in the body because they

a. Have a larger area of anastomosis

b. Are derived from and drain into arterioles

c. Are not made of endothelium

d. Are sites of filtrate formation

More than one choice may apply.

What is the glomerulus?

a. The same as the renal tubule

b. The same as Bowman's capsule

c. The same as the nephron

d. Capillaries

Explain the process and purpose of tubular secretion.

Explain the important differences between blood plasma and glomerular filtrate, and relate the differences to the structure of the filtration membrane.

Filtration at the glomerulus is inversely related to

a. Water reabsorption

b. Capsular hydrostatic pressure

c. Arterial blood pressure

d. Acidity of the urine

More than one choice may apply.

Which of the following is dependent on tubular secretion?

a. Clearing penicillin from the blood

b. Removal of nitrogenous wastes that have been reabsorbed

c. Removal of excess potassium ions from the blood

d. Control of blood pH