Final answer:
Testosterone inhibits the production of GnRH, LH, and FSH when it rises above homeostatic amounts.
Step-by-step explanation:
When testosterone rises above homeostatic amounts, it inhibits the production of GnRH (gonadotropin-releasing hormone), LH (luteinizing hormone), and FSH (follicle-stimulating hormone) by binding to androgen receptors on the hypothalamus and anterior pituitary.
This feedback mechanism helps regulate testosterone levels in the body. Additionally, inhibin produced by Sertoli cells in the testes inhibits FSH release, further reducing testosterone secretion.