A dilated cervix is an opening of the cervix, the lower, narrow end of the uterus that connects to the vagina. The cervix normally dilates during labor to allow the baby to pass through the birth canal. However, it can also dilate prematurely, which can lead to preterm labor and birth.
Checking the dilation of the cervix is an important part of prenatal care. It can help to assess the progress of labor and identify any potential problems. A doctor or midwife can check the dilation of the cervix by performing a vaginal exam.