Which one of the following four secretions is correctly matched with its source, target and nature of action?

Answer

D

Explanation

ANF is produced by atrical muscle fibres. In the question, source mentioned is SA node. But still this is the best option. Inhibin is produced by Sertoli cells in males and granulosa cells in females. It has mainly negative feedback effect on anterior pituitary (Guyton has also mentioned a possible feedback effect on hypothalamus).