Describe the three stages of childbirth:
Answer:
1) cervical dilation - cervix dilates to 10cm, takes 6-12 hours, contractions last 20 seconds, thirty minutes apart, then 90 seconds apart and last for a minute
2) expulsion - starts with head in the birth canal, ends with birth, the posterior facing fetus is easiest, typically 2 hours
3) Afterbirth - the passing of placenta and associated membranes, beings postpartum period
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