Testosterone production is mainly contributed by:: (A) Leydig cells, (B) Seolie cells, (C) Seminiferous tubules, (D) Epididymis
Answer is A. Testosterone is a Cl 9 steroid that is synthesized from cholesterol within the interstitial Leydig cells. Ref: Ganong's Review of Medical Physiology, 22nd Edition, Pages 424-25; Good Clinical Practice in Assisted Reproduction By Paul Serhal, Caroline Oveon, 2004, Page 25.