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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: À 10 semaines, la stimulation de la paupière supérieure produit un roulement de l'œil vers le bas.

Le fœtus baille et ouvre et ferme souvent la bouche.

All ages referenced to fertilization, not last menstrual period.
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