The canal that extends from the vestibule to the uterus is called the vagina.
Vagina is a part of the female reproductive system forming an elastic, muscular part of the female genital tract. It is involved in the processes of menstruation by discharging the menstrual fluid, sexual intercourse and childbirth. It extends from the vulval vestibule to the neck of the uterus called the cervix. The vulval vestibule is a part of the vulva in which the urinary opening and the vaginal opening open. The uterus is a pear shaped, hollow, muscular organ also called the womb which is involved in the process of menstruation and also in the development of the fetus during pregnancy.