The ovaries are a pair of organs in the female reproductive system. They are in the pelvis, one on each side of the uterus (the hollow, pear-shaped organ where a fetus grows). Each ovary is about the size and shape of an almond. The ovaries make eggs and female hormones.  The fallopian tubes are a pair of tubes through which eggs travel from the ovaries to the uterus.  The peritoneum is the membrane lining the cavity of the abdomen and covering the abdominal organs.