Menstruation is triggered by a drop in the levels of
A)FSH.
B)LH.
C)relaxin.
D)progesterone.
E)inhibin.

Question

Quizplus · Accepted Answer

Menstruation is triggered by a drop in progesterone levels. Progesterone is produced by the corpus luteum and helps to maintain the endometrium lining. When pregnancy does not occur, the corpus luteum degenerates, leading to a drop in progesterone levels, which signals the shedding of the endometrial lining.

Therefore, choice D, progesterone, is the best answer.

Menstruation Is Triggered by a Drop in the Levels of