Just prior to menses,
A) ovulation occurs.
B) a new uterine lining is formed.
C) secretory glands and blood vessels develop in the endometrium.
D) estrogen and progesterone levels drop rapidly.
E) the corpus luteum is formed.

Question

Quizplus · Accepted Answer

Just prior to menses, estrogen and progesterone levels drop rapidly, leading to the shedding of the endometrial lining and the start of menstruation. This indicates that ovulation has already occurred and a new uterine lining has already been formed in preparation for potential pregnancy. Secretory glands and blood vessels develop in the endometrium during the luteal phase, which occurs after ovulation. The corpus luteum is also formed during the luteal phase.

Just Prior to Menses