FSH

Pituitary gland (anterior)

Ovaries (females), Testes (males)

Stimulates follicle growth in ovaries; sperm production in males

LH

Pituitary gland (anterior)

Ovaries (females), Testes (males)

Triggers ovulation; stimulates testosterone production in males

Estrogen

Ovaries (follicles)

Uterus, breasts, other tissues

Builds uterine lining; develops female secondary sex traits

Progesterone

Ovaries (corpus luteum)

Uterus

Maintains uterine lining for possible pregnancy

Testosterone

Testes (Leydig cells)

Muscles, bones, reproductive organs

Develops male sex traits; supports sperm production