How does the cervix transform during pregnancy?
setTopicVideo(); –> According to Dr. Nardone, the cervix is the structure that is intended to protect the fetus during its development. It is designed to remain firmly closed and provide resistance to pressure from the growing structures above it (the fetus and uterus). “Once labor ensues, the cervix must be able to yield to the intrauterine pressure and contractions and undergo dilatation and effacement [thinning out],” says Dr. Nardone. “The main component of the cervix is collagen, and this provides its firm consistency during gestation.” The influx of hormones that a progressing pregnancy creates causes the external os (opening of the cervix) to shorten and even open slightly. The internal os becomes more prominent, but thinner walled.
