Consider the hormonal regulation of the male reproductive system described below: A pituitary hormone (A) acts on the interstitial cells (B) of the testis, stimulating them to synthesise and secrete a hormone (C). This hormone (C) in turn stimulates the process of (D). Identify A, B, C, and D.

Step-by-step solution

According to the hormonal control of the male reproductive system, Luteinising Hormone (LH) from the anterior pituitary acts on the Leydig cells (interstitial cells) of the testis. This stimulates the Leydig cells to synthesise and secrete androgens. Androgens, in turn, stimulate the physiological process of spermatogenesis. FSH acts on Sertoli cells to stimulate the secretion of factors that help in spermiogenesis, making the other options incorrect. Spermiation is the release of sperms from the seminiferous tubul