Question

Which one of the following statements is correct with respect to kidney function regulation?

• A. During summer when body loses of lot of water by evaporation, the release of ADH is suppressed
• B. When someone drinks lot of water, ADH release is suppressed
• C. Exposure to cold temperature stimulates ADH release
• D. An increase in glomerular blood flow stimulates formation of Angiotensin II.

Answer 1

The correct option is B When someone drinks lot of water, ADH release is suppressed

ADH (Antidiuretic hormone) or vasopressin facilitates water reabsorption in the DCT and collecting ducts, by increasing the sodium reabsorption.
Excessive loss of water from the body activates osmoreceptors in the hypothalamus, which stimulates the pituitary to release ADH.
An increase in the body fluid volume switches off the osmoreceptors and stops the production of ADH.