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The Endowment for Human Development
The Endowment for Human Development
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Head and Neck

4 weeks, 6 days

From The Biology of Prenatal Development.Buy Now

Label Key:

1. 1st pharyngeal arch (maxillary process)
2. stomodeum
3. 1st pharyngeal arch (mandibular process)
4. 2nd pharyngeal arch
5. hindbrain
6. forebrain
7. heart
8. auricular groove
9. right anterior cardinal vein
All ages referenced to fertilization, not last menstrual period.
Amnion
Amnion
Heart and Liver
Heart and Liver
Head and Neck
Head and Neck
Upper and Lower Limb Buds
Upper and Lower Limb Buds
Head and Heart
Head and Heart
Upper and Lower Limb Buds
Upper and Lower Limb Buds


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