Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 33

ADH regulates the final urine concentration by controlling:

A. Active reabsorption of sodium

B. Tubular permeability

C. Passive reabsorption of urea

D. Passive reabsorption of chloride

Step 1 of 2

Antidiuretic hormone: (ADH)

• It is the hormone secreted by the pituitary gland of the brain.

• It acts on the distal convoluted tubules and collecting ducts present in the nephron to reabsorb water from the filtrate.

• In the antidiuretic hormone presence, permeability of the tubules increases thereby, reabsorption of water occurs finally the urine output will be more concentrated.

Therefore, the “tubular permeability” is controlled by the ADH regulating the final urine concentration. Hence, the correct answer is option