How does the endocrine system regulate the function of the reproductive system in males and females

In males, the testes, located in the scrotum, secrete hormones called androgens; the most important of which is testosterone. ... These hormones control the development of female characteristics (for example, breast growth), and they are also involved in reproductive functions (for example, menstruation, pregnancy).

answer: i would say the brain but it seem that you have a brain.