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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: Süda lööb tavaliselt umbes 113 korda minutis.

Süda muudab iga löögiga värvi, kui veri kodadesse siseneb ja sealt väljub.

Süda lööb enne sünnitust ligikaudu 54 miljonit korda ja üle 3,2 miljardi korra 80 eluaasta jooksul.

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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