This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
Inhibin is secreted by 
Select and explain. 
A. Seoli cells, B. Stroma, C. Surface epithelium of ovary, D. Corpus luteum
A: Seoli cells
Answer: A: Seoli cells 
Explanation: Inhibin is one of several proteins that paicipate in differentiation and growth. Two glycoproteins, inhibin A and inhibin B, are secreted by Seoli cells in the testis and granulosa cells in the ovary, inhibiting FSH secretion by direct action on the pituitary.Ref: Ganong&;s review of medical physiology; 24th edition; page no:-427