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The Endowment for Human Development
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The Fetus Yawns


10 weeks

From The Biology of Prenatal Development.Buy Now

Script: A las 10 semanas, la estimulación del párpado superior hace que mueva los ojos hacia abajo.

El feto bosteza y abre y cierra la boca con frecuencia.

All ages referenced to fertilization, not last menstrual period.
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