In the female menstrual cycle
A)ovulation is stimulated by decreasing concentrations of progesterone.
B)menstruation occurs during the last four days of the cycle.
C)progesterone secretion is stimulated by LH.
D)the luteal phase is characterized by high circulating concentrations of estrogens.

Question

Quizplus · Accepted Answer

Progesterone secretion is actually stimulated by luteinizing hormone (LH), not the other way around. LH causes the ruptured ovarian follicle to develop into the corpus luteum, which secretes progesterone.

Note: The other options are incorrect. A is incorrect because ovulation is actually stimulated by increasing concentrations of luteinizing hormone (LH), not decreasing concentrations of progesterone. B is incorrect because menstruation occurs during the first few days of the cycle, not the last four days. D is incorrect because the luteal phase is characterized by high circulating concentrations of progesterone, not estrogens.

In the Female Menstrual Cycle