ovary

the reproductive organ of females, which produces eggs (ova) and hormones (mainly OESTROGEN and PROGESTERONE ). There are two ovaries, each the size of an almond, on either side of the UTERUS , and each contains numerous Graafian FOLLICLES in which the eggs develop. At OVULATION an eggs is released from a follicle. The follicles secrete oestrogen and progesterone, which regulate the MENSTRUAL CYCLE and the UTERUS during PREGNANCY .