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The Endowment for Human Development
The Endowment for Human Development
Improving lifelong health one pregnancy at a time.
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Heart and Liver

4 weeks, 6 days

Heart and Liver [Click for next image]
From The Biology of Prenatal Development.Buy Now

Label Key:

1. mouth (stomodeum)
2. brain
3. 1st pharyngeal arch (mandibular process)
4. heart chambers
5. liver
6. sinus venosus
All ages referenced to fertilization, not last menstrual period.
The Early Brain and Face
The Early Brain and Face
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
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