What are the stages of labor and how do they progress?
What will be an ideal response?
Sample response:
At the onset of labor, called stage one labor, contractions begin as the cells of the uterus, now the largest muscle in the mother's body, contract in sequence along its length, pulling and straightening the uterus and pushing the fetus down toward the cervix. At this point, the cervical canal is beginning to dilate (become larger in diameter) and efface (become thinner). During the beginning of stage one labor, the cervix is about 1 to 2 inches dilated, and as stage one labor continues, it will continue to dilate to approximately 10 centimeters or about 4 inches.
Stage two labor leads to the birth of the baby. Contractions begin to involve the muscles of the abdomen as well as the uterus itself. The mother has somewhat more control over these contractions, and many women report that this sense of control seems to reduce the amount of pain they perceive. At this point, the woman will feel a great deal of abdominal pressure as her body is working to deliver her baby.
In stage three labor, within a few minutes following the completed birth of the infant, the placenta (which has joined the fetus and mother throughout pregnancy) is expelled from the uterus with the umbilical cord attached.
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