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The Endowment for Human Development
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The Vital Organs

5 weeks, 6 days

From The Biology of Prenatal Development.Buy Now

Label Key:

1. umbilical cord
2. brain
3. heart
4. liver
5. left hand plate
6. marginal vein
All ages referenced to fertilization, not last menstrual period.
Heart and Liver
Heart and Liver
Heart Chambers
Heart Chambers
The Vital Organs
The Vital Organs
Yolk Sac and Vitelline Vessels
Yolk Sac and Vitelline Vessels
Yolk Sac
Yolk Sac
The Beating Heart
The Beating Heart


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