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Endometrium and cervix

The cervix is the lower part of the uterus that opens into the vagina. It is also called the neck of the uterus.

The endometrium is the mucous membrane that lines the inside of the uterus (womb). The endometrium changes throughout the menstrual cycle. It becomes thick and rich with blood vessels to prepare for pregnancy. If the woman does not get pregnant, part of the endometrium is shed, causing menstrual bleeding.

By	Healthwise Staff
Primary Medical Reviewer	Sarah Anne Marshall, MD - Family Medicine
Specialist Medical Reviewer	Femi Olatunbosun, MB, FRCSC - Obstetrics and Gynecology
Last Revised	February 10, 2010

WebMD Medical Reference from Healthwise

Last Updated: February 10, 2010

This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.