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The Endowment for Human Development
The Endowment for Human Development
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The Heart in Action


4 weeks, 4 days

From The Biology of Prenatal Development.Buy Now

Script: Normalment, el cor batega unes 113 vegades per minut.

Observeu com el cor canvia de color quan la sang entra i surt de les cavitats amb cada batec.

El cor bategarà aproximadament 54 milions de vegades abans del part i més de 3,2 mil milions de vegades en el transcurs d'una vida de 80 anys.

All ages referenced to fertilization, not last menstrual period.
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Body Cavity Formation
Body Cavity Formation
Amniotic Fluid
Amniotic Fluid
The Heart in Action
The Heart in Action
The Limbs Bud
The Limbs Bud
Transparent Skin
Transparent Skin
Cerebral Hemispheres
Cerebral Hemispheres
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