ovaries and testis

• androgens regulate the male accessory sex organs
• androgens play a stimulatory role in the process of spermatogenesis
• estrogen is synthesized and secreted mainly by the growing follicles
• progesterone is mainly secreted by the corpus luteum
• estrogens regulate development of primary and secondary sex organs
• progesterone acts on the mammary glands and stimulates formation of alveoli and milk secretion