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The Endowment for Human Development
The Endowment for Human Development
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Rolling Over


8 weeks

From The Biology of Prenatal Development.Buy Now

Script: Los libros de texto pediátricos dicen que la capacidad de "voltearse" aparece de 10 a 20 semanas después del nacimiento. Sin embargo, esta notable coordinación se observa mucho antes en el entorno de baja gravedad del saco amniótico lleno de líquido. Sólo el no tener la fortaleza necesaria para superar la mayor fuerza de gravedad fuera del útero les impide darse vuelta a los recién nacidos.

All ages referenced to fertilization, not last menstrual period.
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