Effacement and dilatation of the uterine cervix.
D002584:Cervix Uteri / Q000502:physiology*; D004106:Dilatation; D005260:Female; D006801:Humans; D007743:Labor, Obstetric / Q000502:physiology*; D011247:Pregnancy; D014937:Work
CERVIX UTERI/physiology; LABOR/physiology