Question

ADH controls water permeability of

• A. Distal convoluted tubules.
• B. Proximal convoluted tubules.
• C. Bowman's capsule
• D. All of the above.

Answer 1

The correct option is A

Distal convoluted tubules.

The correct option is (A).

Explanation for correct option:

1. ADH is produced by the hypothalamus of the brain and secreted by the pituitary gland.
2. It functions include regulating the amount of water absorbed by the collecting ducts of the kidney.
3. By regulating the water content it controls the concentration of urine secreted by the kidney.
4. DCT controls the concentration of salts and ions with the help of ADH.

Explanation for incorrect option:

Option B:

PCT is a part of the renal tubule of the kidney and its functions include the reabsorption of electrolytes, proteins, and other essential substances in the urine.

Option C:

1. It is a C-shaped sack surrounding the glomerulus.
2. It initiates the first step in the formation of urine by filtration of blood.

Final answer:

Hence, ADH controls the water permeability of Distal convoluted tubules.