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
Sertoli cell feedback mechanism involves 
Select and explain. 
A. Decreased LH, B. Decreased FSH, C. Decreased TRH, D. Decreased CRH
B: Decreased FSH
Answer: B: Decreased FSH 
Explanation: Ans (b) Decreased FSH(Ref: Ganong, 25th ed/p.417)Sertoli cells produce the hormone inhibin which inhibits pituitary FSH (negative feedback)LH acts on the Leydig cells of testis to increase the production and secretion of testosterone which inhibits LH (negative feedback).