This includes the uterus and ovaries or urinary bladder. Fish gonads are typically pairs of either ovaries or testes. The Fallopian tubes are two tubes leading from the ovaries into the uterus. Hormones produced by the ovaries prepare the uterus to receive the ovum. Androgens are synthesized in the testes, the ovaries, and the adrenal glands. Ovarian hyperstimulation is the stimulation to induce development of multiple follicles of the ovaries. Pregnancy is possible for transgender men who retain a functioning vagina, ovaries and a uterus. The ovaries (female gonads), develop from the same embryonic tissue as the testicles. Adult females have two functional ovaries and one functional uterus, on the right. The broad ligament serves as a mesentery for the uterus, ovaries, and the uterine tubes. Swellings in the body wall develop into either ovaries or testes. With current procedures, trans women are unable to receive ovaries or uterus. During mammalian development, the gonads are at first capable of becoming either ovaries or testes. In turn, the pituitary gland releases hormones to the ovaries. Testosterone is mainly synthesized in the testes in men and in the ovaries in women.