A woman's 'Uterus' is also known as her 'Womb'. It is inside a woman's uterus that the human fetus develops. It is situated in the woman's pelvis. At the bottom end of her uterus is the woman's cervix. Her cervix makes up the top end of her vagina. The uterus's main job is to hold and nourish the developing baby when the woman gets pregnant. Therefore what the uterus does is to accept a fertilized ovum. The ovum normally gets fertilized by a man's sperm in her fallopian tube, and then this fertilized ovum decends into the woman's uterus. In the uterus the fertilised ovum becomes embedded in the wall of her uterus where it grows bigger and bigger. It gets nourished from blood vessels in the wall of the uterus, which themselves develop into the placenta. Roughly nine months after the fertilised ovum becomes embedded in the wall of the uterus, the uterus begins to contract - which is the beginning of the process of delivering the baby - that is pushing it out into the outside world, via the woman's cervix and vagina. The uterus also has a sexual response by directing the flow of blood to the woman's pelvis and her external sex organs including her vagina, labia and clitoris. When a woman climaxes (has an orgasm) her uterus is also involved.