The uterus provides the site of implantation, nourishment, and development. Perimetrium is the outer serous layer that covers the uterus. It is derived from the visceral layer of the peritoneum.
The muscular wall of the uterus is the myometrium. Its inner lining is the endometrium. The endometrium is the site of implantation and development of the embryo. The fundus is the top portion of the uterus. The uterus projects into the vagina at the cervix, providing an entrance tube for the sperm.
The vagina is a tubular, muscular canal lined with mucous membrane. It extends from the cervix to the exterior. The vagina receives the penis, serves as the birth canal, and is an outlet for menstrual flow.
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