testosterone---initiates development of secondary sex characteristics in males
luteinizing hormone---initiates cell production of testosterone and estradiol by cells in the gonads
estrogen---initiates the development of secondary sex characteristics in females
follicle-stimulating hormone---stimulates sperm production and growth of ovarian follicles
oxytocin---stimulates contraction of the uterus during childbirth
gonadotropin-releasing hormone--- initiates the secretion of luteinizing hormone and follicle-stimulating hormone