Which statement best describes the role of LH in the male reproductive system?

Which statement best describes the role of LH in the male reproductive system?

• A. Stimulates androgen secretion by the testes
• B. Inhibits testosterone production
• C. Stimulates spermatogenesis directly
• D. Is produced by the testes

Answer: (A)

LH in the male reproductive system primarily stimulates androgen secretion by the testes. It acts on Leydig cells, triggering steroid production and release of testosterone. This testosterone then supports spermatogenesis indirectly, creating the environment and signaling needed for Sertoli cells to drive the development of sperm. LH itself is not produced by the testes; it comes from the anterior pituitary under GnRH control. The other statements don’t fit because LH does not inhibit testosterone, does not directly stimulate spermatogenesis (that role is mainly played by FSH with the help of testosterone), and is not produced by the testes.

LH in the male reproductive system primarily stimulates androgen secretion by the testes. It acts on Leydig cells, triggering steroid production and release of testosterone. This testosterone then supports spermatogenesis indirectly, creating the environment and signaling needed for Sertoli cells to drive the development of sperm. LH itself is not produced by the testes; it comes from the anterior pituitary under GnRH control. The other statements don’t fit because LH does not inhibit testosterone, does not directly stimulate spermatogenesis (that role is mainly played by FSH with the help of testosterone), and is not produced by the testes.