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 (chemicals that control the way certain cells or organs work).
SEER Cancer Stat Facts: Ovarian Cancer. National Cancer Institute. Bethesda, MD, http://seer.cancer.gov/statfacts/html/ovary.html