NORMAL LABOR IN VERTEX PRESENTATION.
D002584:Cervix Uteri; D005260:Female; D006801:Humans; D007746:Labor Presentation; D008365:Manometry; D009119:Muscle Contraction; D011247:Pregnancy; D014599:Uterus
CERVIX UTERI; LABOR PRESENTATION; MANOMETRY; MUSCLE CONTRACTION; PREGNANCY; UTERUS