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Slideshow: The Developing Brain
The Head and Mouth
#65, Slide 8 of 21
4 weeks, 4 days
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From
The Biology of Prenatal Development
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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.