Question

Menstruation is triggered by an abrupt decline in the amount of ______.

विकल्प

• estrogen

• progesterone

• luteinizing hormone

• follicle-stimulating hormone

Answer 1

Menstruation is triggered by an abrupt decline in the amount of progesterone.

Explanation:

Menstruation is triggered by an abrupt decline in the amount of progesterone. After ovulation, progesterone is produced by the corpus luteum to maintain the uterine lining. If fertilization does not occur, the corpus luteum degenerates, causing a drop in progesterone levels. This hormonal decline leads to the breakdown and shedding of the endometrium, resulting in menstruation. Thus, the sudden fall in progesterone initiates menstrual bleeding.