The luteal phase of the ovarian cycle
A)is responsible for menstruation.
B)is responsible for the uterine secretory phase.
C)elevates plasma levels of estrogen,progesterone,and hCG.
D)precedes the LH surge.

Question

Quizplus · Accepted Answer

The luteal phase is responsible for the uterine secretory phase, which prepares the endometrium for implantation of a fertilized egg. It is characterized by high levels of progesterone and small amounts of estrogen, which promote thickening of the endometrial lining. If fertilization does not occur, the decrease in hormone levels triggers menstruation. The LH surge precedes the luteal phase, and although hCG is typically associated with pregnancy rather than the menstrual cycle, it is produced by cells in the corpus luteum during the luteal phase.

The Luteal Phase of the Ovarian Cycle