Unlike the male reproductive organs, most of the reproductive organs of the female are inside the body. The ovaries, the female sex organs, are placed in the lower part of the body cavity, they're about the size and shape of an almond. When a female is born, she already has all the cells in her ovaries that eventually will develop into an egg, the female reproductive cells. About once a month an egg is released from an ovary with a process called ovulation. After it is released, it enters the oviduct----- where fertilization usually occurs. Short, hairlike structures called cilia help sweep the egg through the oviduct to the uterus, which is a hollow, pear-shaped, muscular organ with thick walls in which a fertilized egg develops. The lower part of the uterus is called the cervix narrows and is connected to the outside of the body by a muscular tube called the vagina. The vagina is also called the birth canal because during birth, a baby travels through this tube to the outside of the mothers body.
adam female reproductive system thumb1 Functions of the Female Reproductive Organs
adam female reproductive system thumb1 Functions of the Female Reproductive Organs

The egg is already fertilised, it implants itself into the lining of the uterus (the endometrium). During each cycle the endometrium thickens ready to receive a fertilised egg. If there is no fertilised egg, the endometrium breaks down and is taken away from the body at menstruation, when a woman has a period.

When a couple has sex, the man injects his sperm into the woman’s vagina near the cervix, the entrance to the woman’s uterus. The cervix is usually blocked by cervical mucus, but this thins around the time of ovulation (when an egg is released from one of the ovaries) to allow sperm to pass through.
The sperm and egg usually meet in the fallopian tube. A single sperm penetrates and fertilises the egg, which then travels into the uterus where it implants into the uterine lining. Once it has implanted, the growing embryo is held by hormones, until the developing placenta can take over and nourish the pregnancy. About nine months after conception, the developing baby is ready to be born.
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