Question Detail
Question
Falling levels of FSH trigger the onset of menstruation.
Correct Answer
Option B is the correct answer.
Detailed Explanation
This statement is false. Menstruation is triggered by a sharp drop in the levels of estrogen and progesterone near the end of the luteal phase, when the corpus luteum degenerates. This drop causes the endometrial lining to shed. FSH levels begin to rise at the end of menstruation to recruit a new follicle.
Hint
Which hormone's withdrawal causes the uterine lining to shed: estrogen/progesterone or FSH/LH?