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Baby’s Pregnancy Calendar |
Age of Viability 21 weeks old / 23 weeks pregnant (since LMP)
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Script: By 21 to 22 weeks after fertilization, the lungs gain some ability to breathe air. This is considered the age of viability because survival outside the womb becomes possible for some fetuses. |
| See Snapshots |
Age of Viability
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Blink-Startle Response
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Somersaults
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Exposure to Loud Noise
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Fetal Respiratory Rate
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Rapid Brain Growth
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