Reproductive System and Hormones · Zoology

Negative feedback regulation in reproduction mainly involves:

  1. FSH stimulating GnRH secretion
  2. LH directly stimulating estrogen release
  3. Sex hormones inhibiting pituitary secretion
  4. Hypothalamus directly inhibiting the ovaries
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Correct answer: Sex hormones inhibiting pituitary secretion

Sex hormones like testosterone, estrogen, and progesterone inhibit the secretion of pituitary gonadotropins (FSH and LH) through negative feedback. This maintains hormonal balance throughout the reproductive cycle.

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