When the tubular load of a substance exceeds the tubular maximum, that substance will

a. be actively transported into the blood.

b. diffuse into the blood.

c. appear in the urine.

d. cause a backflow of filtrate from Bowman's capsule into the glomerulus.

e. be broken down by carbonic anhydrase.

Answer: C

Angiotensin II causes

a. increased ADH secretion.

b. increased thirst.

c. increased salt appetite.

d. increased peripheral resistance.

e. all of these

Answer: E

Which of these conditions increases the amount of urine produced?

a. increased ADH secretion

b. increased atrial natriuretic hormone secretion

c. increased aldosterone secretion

d. decreased blood pressure in the glomerular capillaries

Answer: e. sympathetic stimulation of the renal arteries

Drinking a large amount of beer results in

a. increased aldosterone secretion.

b. increased permeability of the collecting ducts of the nephrons.

c. decreased urine osmolality.

d. increased urine volume.

e. both c and d

Answer: E

Juxtaglomerular cells secrete

a. ADH.

b. oxytocin.

c. renin.

d. aldosterone.

e. angiotensin

Answer: C

Urea diffuses out of the __________ , and into the __________ .

a. proximal tubule, distal tubule

b. proximal tubule, descending limb of the loop of Henle

c. descending limb of the loop of Henle, ascending limb of the loop of Henle

d. ascending limb of the loop of Henle, descending limb of the loop of Henle

e. collecting duct, descending limb of the loop of Henle

Answer: E