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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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Amnion

4 weeks, 6 days

Amnion [Click for next image]
From The Biology of Prenatal Development.Buy Now

Label Key:

1. placental vessels
2. uterine wall
3. outline of amnion
4. head with surface blood vessels easily seen
All ages referenced to fertilization, not last menstrual period.
Surrounded by the Amnion
Surrounded by the Amnion
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
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