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The Endowment for Human Development
The Endowment for Human Development
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Slideshow: Eyes, Ears, Mouth & Nose

Head and Heart

#63, Slide 1 of 52

4 weeks, 4 days

From The Biology of Prenatal Development.Buy Now

Label Key:

1. midbrain
2. forebrain
3. chest wall
4. site of the future opening of the mouth (stomodeum)
5. heart
6. 1st pharyngeal arch (mandibular portion)
All ages referenced to fertilization, not last menstrual period.
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