The cervix is the lower end of the womb (uterus). It is at the top of the vagina. It is about 1 inch long. The cervical canal passes through the cervix. It allows blood from a menstrual period and a baby (fetus) to pass from the womb into the vagina.
The cervical canal also allows sperm to pass from the vagina into the uterus.
A PAP smear is a screening test to check for cancer of the cervix.
David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.
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