Which of the following happens during the luteal phase of the menstrual cycle?
a. The corpus luteum secretes estrogen and blocks production of GnRH by the hypothalamus.
b. The endometrium thickens.
c. LH and FSH stimulate growth of follicles.
d. Low levels of estrogen cause the endometrial arteries to constrict.
a. The corpus luteum secretes estrogen and blocks production of GnRH by the hypothalamus.
During the luteal phase—the third phase—of the menstrual cycle, the corpus luteum secretes estrogen and blocks production of GnRH by the hypothalamus.
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