Dilated Cervix

A fully dilated cervix is necessary for a successful vaginal birth. Once labor starts, rhythmic contractions that begin at the top of the uterus and travel down its length force the contents of the uterus toward the cervix. Since the fetus is usually positioned with its head downward, labor contractions force the head against the cervix. This action causes the cervix to stretch, which is thought to elicit a reflex that will stimulate still stronger labor contractions until a maximum effort...

Anatomy Explorer

Instructions:

Zoom in/out: Click +/-

Move up/down/left/right: Click compass arrows

Rotate image: Click and drag in any direction, anywhere in the frame

Identify objects: Click on them in the image

2D Interactive3D Rotate & Zoom
Change Anatomical System
Change View Angle

    Full Dilated Cervix Description

    [Continued from above] . . . is achieved. At the same time, the cervix dilates and, as labor continues, abdominal wall muscles are stimulated to contract and aid in forcing the fetus through the cervix and vagina to the outside.