<P> In males , the production of GnRH , LH , and FSH are similar , but the effects of these hormones are different . FSH stimulates sustentacular cells to release androgen - binding protein , which promotes testosterone binding . LH binds to the interstitial cells , causing them to secrete testosterone . Testosterone is required for normal spermatogenesis and inhibits the hypothalamus . Inhibin is produced by the spermatogenic cells , which , also through inactivating activin , inhibits the hypothalamus . After puberty these hormones levels remain relatively constant . </P>
<P> In males , the production of GnRH , LH , and FSH are similar , but the effects of these hormones are different . FSH stimulates sustentacular cells to release androgen - binding protein , which promotes testosterone binding . LH binds to the interstitial cells , causing them to secrete testosterone . Testosterone is required for normal spermatogenesis and inhibits the hypothalamus . Inhibin is produced by the spermatogenic cells , which , also through inactivating activin , inhibits the hypothalamus . After puberty these hormones levels remain relatively constant . </P>
how is the spermatogenesis in the testis inhibited by the brain testicular axis
how is the spermatogenesis in the testis inhibited by the brain testicular axis
through inactivating activin , inhibits the hypothalamus
through inactivating activin , inhibits the hypothalamus