Question

Water reabsorption in the distal parts of kidney tubules is regulated by

• A. STH
• B. TSH
• C. ADH
• D. MSH

Answer 1

The correct option is C ADH

Antidiuretic hormone (ADH) or vasopressin increase water reabsorption in the collecting ducts and the distal convoluted tubule of the kidney nephron. It is released by the posterior pituitary gland. It plays a key role in homoeostasis, by the regulation of water, glucose, and salts in the blood. It increases the permeability of the collecting tubule by inducing translocation of aquaporin-CD water channels in the plasma membrane of collecting duct cells.

So, the correct answer is option C.