The cervix is the lower, narrow part of the uterus that connects the uterine cavity with the vagina.
During most of pregnancy, the cervix remains firm and closed to help protect the developing baby. As labor begins, it gradually softens, thins (effaces), and opens (dilates), allowing the baby to pass through the birth canal.
Healthcare providers often measure cervical dilation in centimeters to assess the progress of labor.
QUICK FACT
During labor, a cervix is considered fully dilated at approximately 10 centimeters, allowing the baby to pass into the birth canal.
COMMONLY CONFUSED WITH
- Vagina: the muscular canal extending from the cervix to the external genital opening.
- Uterus: the larger muscular organ of which the cervix is the lower portion.
SEE ALSO
