what stimulates rlease of testosterone
The amount of testosterone synthesized is regulated by the hypothalamicâpituitaryâtesticular axis (see figure to the right). When testosterone levels are low, gonadotropin-releasing hormone (GnRH) is released by the hypothalamus, which in turn stimulates the pituitary gland to release FSH and LH.These latter two hormones stimulate the testis to synthesize testosterone.he amount of testosterone synthesized is regulated by the hypothalamicâpituitaryâtesticular axis (see figure to the right). When testosterone levels are low, gonadotropin-releasing hormone (GnRH) is released by the hypothalamus, which in turn stimulates the pituitary gland to release FSH and LH.