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The Endowment for Human Development
The Endowment for Human Development
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The Four-Chambered Heart

6 weeks, 6 days

From The Biology of Prenatal Development.Buy Now

Note:

The four chambers of the heart are already working very well together.

Label Key:

1. head
2. neck
3. heart
All ages referenced to fertilization, not last menstrual period.
Left Hand and Left Eye
Left Hand and Left Eye
Close-up, Seven-Week Heart
Close-up, Seven-Week Heart
The Four-Chambered Heart
The Four-Chambered Heart
The Heart
The Heart
The Heart and Chest
The Heart and Chest
The Hand, Chest, and Liver
The Hand, Chest, and Liver
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