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Hypothalamus
First, the hypothalamus secretes the hormone GnRH which goes to the pituitary gland to secrete FSH and LH
Anterior Pituitary
The anterior pituitary gland is where FSH and LH is being released from. FSH will travel thru the blood and into the testes where it targets the sertoli cells in the seminiferous tubules to cause spermatogenesis (via negative feedback).
LH will also travel through the blood and into the testes. However, this hormone targets the interstitial cells to secrete testosterone into the testes and the blood.
Role of LH and FSH
To stimulate spermatogenesis and testosterone secretion into the testes
Role of Testosterone and Inhibin
Testosterone and Inhibin will inhibit the secretion of GnRH by sending the message to the hypothalamus and to FSH + LH via the pituitary gland
