<prompt> Leydig cells secrete-InhibinMISTestosteroneAndrogen binding protein  <response>: Ans. is c i.e., Testosterone Thyroido Thyroxine T4 Triiodothyronine T3 by follicular cells,o Calcitonin by parafollicular cells.Parathyroido Parathormone PTHPancreaso Insulin amylin by b-cells B - cells,o Glucagon by a-cells A - cells,o Somatostatin by d-cells D - cells,o pancreatic polypeptide by F - cells.Gonadso Testis Androgens testosterone others by Leydig cells. ABP, inhibin activin and MIS by sertoli cells,o Ovary Estrogen by granulosa cells. Progesterone by theca cells. Inhibin is secreted by granulosa cells and corpus luteum. Activin is secreted by granulosa cells. Relaxin is secreted by granulosa cells.Hypothalamuso Oxytocin by paraventricular nucleus,o ADH by supraoptic nucleus.o GHRH, CRH, TRH, GnRH and prolactin inhibiting hormone. 