This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and Reproduction, Subject name: Physiology
Testosterone is secreted by- 
Select and explain. 
A. Leydig cells, B. Sertoli cells, C. Seminiferous tubules, D. Epididymis
A: Leydig cells
Answer: A: Leydig cells 
Explanation: Ans. is 'a' i.e., Leydig cells * Leydig cells have receptors for LH and secrete androgens, i.e. Testosterone, dihydrotestosterone (DHT), androstenedione, and dehydroepiandrosterone (DHEA).* Sertoli cells have receptors for FSH and secrete ABP, inhibin and MIS. sertoli cells also have receptor for testosterone.