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The Endowment for Human Development
The Endowment for Human Development
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Age of Viability


5 months, 1 week

From The Biology of Prenatal Development.Buy Now

Script: Mellan vecka 21 och 22 efter befruktningen får lungorna en viss förmåga att andas luft. Detta anses vara gränsen för livsduglighet eftersom det blir möjligt att överleva utanför livmodern för vissa foster.

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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