Movie TheaterSucking and Swallowing |
| Buy NowFrom The Biology of Prenatal Development. |
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Script: By 9 weeks, thumb sucking begins and the fetus can swallow amniotic fluid. |
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All ages referenced to fertilization, not last menstrual period.
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Sucking and Swallowing
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4D Ultrasound
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A Burst of Growth
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4D Ultrasound
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The Fetus Yawns
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Thumb Sucking
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