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The Endowment for Human Development
The Endowment for Human Development
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Slideshow: The Developing Brain

The Head and Mouth

#65, Slide 8 of 21

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.
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