Movie TheaterReady for Birth |
| Buy NowFrom The Biology of Prenatal Development. |
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Script: The fetus initiates labor by releasing large amounts of a hormone called estrogen and thus begins the transition from fetus to newborn. Labor is marked by powerful contractions of the uterus, resulting in childbirth. |
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All ages referenced to fertilization, not last menstrual period.
One month = 4 weeks.
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Ready for Birth
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DNA
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To the Earth and Back
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Fertilization 1
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Fertilization 2
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Cell Division
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