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MDCAT Biology QUESTION #11392
Question 1
In the male reproductive system, the hormone involved in the regulation of the rate of spermatogenesis is:
  • Repolarizing simulating hormone
  • Testosterone✔️
  • FSH
  • LH
Correct Answer Explanation
Testosterone, secreted by Leydig cells of the testes under LH stimulation, is the primary hormone regulating spermatogenesis. It acts on Sertoli cells to support sperm development. FSH also stimulates Sertoli cells (which nourish developing sperm), but testosterone is the principal regulator of the rate of spermatogenesis.