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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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Right Upper Limb

4 weeks, 4 days

Right Upper Limb [Click for next image]
From The Biology of Prenatal Development.Buy Now

Label Key:

1. uterine wall
2. liver
3. placental vessels
4. amnion
5. trunk
6. right upper limb bud
All ages referenced to fertilization, not last menstrual period.
Digestive Tract, 4-Week Embryo
Digestive Tract, 4-Week Embryo
The Body Plan Emerges
The Body Plan Emerges
Right Upper Limb
Right Upper Limb
The Heart in Motion
The Heart in Motion
Central Nervous System
Central Nervous System
Head, Heart, and Liver
Head, Heart, and Liver
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