Question

Withdrawal of which of the following hormones is the immediate cause of menstruation?

• A. Progesterone
• B. Estrogen
• C. FSH
• D. FSH-RH

Answer 1

Answer: (A)

Progesterone

Answer 2

Progesterone is required for the maintenance of the endometrial lining of the uterus. As soon as the production of progesterone is reduced due to reduction in the production of $LH$ from anterior lobe of the pituitary, the endometrium of the uterus breaks down and menstruation begins.