Give the names and functions of the hormones involved in the process of spermatogenesis. Write the names of the endocrine glands from where they are released.

(N/A) Spermatogenesis begins at puberty due to a significant increase in the secretion of Gonadotropin-Releasing Hormone $(GnRH)$.
$GnRH$ is a hypothalamic hormone released from the hypothalamus.
The increased levels of $GnRH$ act on the anterior pituitary gland and stimulate the secretion of two gonadotropins: Luteinizing Hormone $(LH)$ and Follicle-Stimulating Hormone $(FSH)$.
$LH$ acts on the Leydig cells (interstitial cells) and stimulates the synthesis and secretion of androgens (testosterone). Androgens,in turn,stimulate the process of spermatogenesis.
$FSH$ acts on the Sertoli cells and stimulates the secretion of certain factors that help in the process of spermiogenesis (the transformation of spermatids into spermatozoa).