<prompt> Inhibin is secreted bySeoli cellsStromaSurface epithelium of ovaryCorpus luteum  <response>: 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 