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No new follicles develop in the luteal phase of the menstrual cycle because:

1. Both FSH and LH levels are low in the luteal phase.
2. Follicles do not remain in the ovary after ovulation.
3. FSH levels are high in the luteal phase.
4. LH levels are high in the luteal phase.

Correct answer: Both FSH and LH levels are low in the luteal phase.

Solution

New follicles do not develop in the luteal phase because the pituitary gonadotropins that drive follicular growth are suppressed. Low FSH prevents recruitment and maturation of new follicles, and low LH prevents continued follicular support.

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