If pregnancy does not occur, ____.
A)LH levels rapidly rise
B)the corpus luteum degenerates
C)estrogen and progesterone levels rise
D)the endometrium thickens
E)the luteal phase begins

Question

Quizplus · Accepted Answer

If pregnancy does not occur, the corpus luteum will degenerate, leading to a decrease in estrogen and progesterone levels. This will eventually cause the shedding of the endometrium, resulting in menstruation. The rise of LH levels and the beginning of the luteal phase are related to ovulation and do not occur if pregnancy does not occur.

If Pregnancy Does Not Occur, ____