s produce by OVARY are.. estrogen and progesterone Estrogen is a steroid hormone that helps CONTROL and guide female sexual development. Estrogen is responsible for stimulating the development of female secondary sex characteristics. We know that secondary sex characteristics are defined as characteristics specific to females or males, but not directly related to reproduction. Therefore, in a female, we see estrogen helps with such things as development of the breasts, widening of the hips, and the growth of body hair.Estrogen works in harmony with progesterone, which is a steroid hormone that acts to prepare the uterus to receive the fertilized egg and maintain pregnancy. While it is CORRECT to say that progesterone is secreted by the ovaries, it's more correct to say that it is a hormone produced by the corpus luteum of the ovaries. The testes secrete testosterone, which is necessary for proper physical development in boys.In adulthood, testosterone maintains libido, muscle strength, and BONE density.Disorders of the testes are caused by too little testosterone PRODUCTION