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The Endowment for Human Development
The Endowment for Human Development
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The Head and Mouth

4 weeks, 4 days

From The Biology of Prenatal Development.Buy Now

Label Key:

1. midbrain
2. 1st pharyngeal arch (maxillary process)
3. hindbrain
4. forebrain
5. chest wall
6. mouth (stomodeum)
7. heart
8. 1st pharyngeal arch (mandibular process)
All ages referenced to fertilization, not last menstrual period.
Head and Heart
Head and Heart
Head and Heart
Head and Heart
The Head and Mouth
The Head and Mouth
Heart Chambers and Liver
Heart Chambers and Liver
Heart in Slow Motion
Heart in Slow Motion
Surrounded by the Amnion
Surrounded by the Amnion


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