The lower, narrow part of the uterus (womb) that opens into the vagina (birth canal).
Sperm passes from the vagina into the uterus through the cervix. During menstruation, the cervix opens (dilates) slightly to allow the endometrium (lining of the uterus) to pass into the vagina. The cervix opens much wider during childbirth to allow the baby to pass from the uterus into the vagina.
Cervical means referring to or having to do with the cervix, as in cervical cancer.
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