After examining the laboring woman, the physician tells her that her cervix showed some effacement. Later, the woman asks the nurse what "effacement" is. Effacement is best described as:
a. Enlargement of the cervical os to permit the fetus to pass through
b. Relaxation and stretching of perineal muscles
c. Shortening and thinning of the cervix
d. Loss of the mucous plug
ANS: C
The uterus is normally pear shaped, with the cervix at the narrow end. As labor progresses, the cervix becomes shorter and thinner. This is called effacement.
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