Which of the following describes why hypertonic contractions tend to become very painful?
A) More than one contraction may begin at the same time, as receptor points in the myometrium act independently of each other.
B) The myometrium becomes sensitive from the lack of relaxation and anoxia of uterine cells.
C) The number of uterine contractions is very low or infrequent.
D) There is an increase in the length of labor because so many contractions are needed to achieve cervical dilation.
B
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