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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: Sirds parasti pukst 113 reizes minūtē.

Ievērojiet kā sirds maina krāsu, asinīm ieplūstot un izplūstot no kambariem katra sirdspuksta laikā.

Sirds pukstēs apmēram 54 miljonu reižu līdz dzimšanas brīdim un vairāk nekā 3,2 miljardu reižu 80 gadu ilgā mūžā.

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
Buy the Biology of Prenatal Development DVD
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