FSH secretion from the anterior pituitary gland is inhibited by a peptide hormone released by the gonads called

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Inhibin is a peptide hormone that is released by the gonads (specifically, the ovaries in females and the testes in males) in response to high levels of FSH. Its primary function is to inhibit the secretion of FSH from the anterior pituitary gland, thereby regulating reproductive function. Relaxin is also a peptide hormone released by the gonads, but it primarily affects the female reproductive system by facilitating egg implantation and labor. Testosterone and androgens are male sex hormones that stimulate the production of sperm and regulate male secondary sexual characteristics. LH (luteinizing hormone) is another pituitary hormone that stimulates the release of testosterone in males and ovulation in females. None of these hormones directly inhibit FSH secretion.

FSH Secretion from the Anterior Pituitary Gland Is Inhibited by a Peptide