Ovaries : The ovaries secrete the following hormones :
(1) Estrogen : It is secreted by graafian follicles. Estrogen performs the following functions :
a. It brings ovulation.
b. It brings development of genital ducts.
(2) Progesterone : It is secreted by corpus luteum. The progesterone help in the implantation. The progesterone also maintains the enlargement of uterine wall during pregnancy.
(3) Relaxin : It is secreted by corpus luteum (part of graafian follicle after ovulation) at the end of gestation period. It enlarges the pelvic region during the childbirth.