Cervix - Anatomy & Function
The opening of the cervical canal is normally very narrow. However under the influence of the body hormones and the pressure from the fetal head, this opening widens to about 4 inches (10 cm.) during labor, to allow the birth of a baby.
If the opening is loose, as observed in some women, it can lead to miscarriages during pregnancy.
Cervical ripening procedure consits of softening, dilatation and shortening of the cervical canal in order to push the baby out without any obstruction.