What happens in the dilation stage of labor?
A) the amniotic sac ruptures
B) the contractions of the uterine myometrium cause constriction of the uterine blood vessels
C) the placenta expels from the uterus
D) progesterone levels increase sharply
E) oxytocin levels decrease

Question

Quizplus · Accepted Answer

During the dilation stage of labor, the cervix begins to open and thin out. This may be accompanied by the rupture of the amniotic sac, which releases the amniotic fluid that surrounds the baby. The contractions of the uterine myometrium cause the cervix to dilate, and contractions may become more intense and frequent as labor progresses. The placenta is typically expelled during the third stage of labor, after the delivery of the baby. Progesterone levels decrease during labor, rather than increase, and oxytocin levels typically increase to stimulate contractions. Therefore, the best choice is A, as this accurately reflects a common occurrence during the dilation stage of labor.

What Happens in the Dilation Stage of Labor