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The Endowment for Human Development
The Endowment for Human Development
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Slideshow: Umbilical Cord, Placenta & More

The Lower Embryo

#73, Slide 1 of 35

4 weeks, 6 days

From The Biology of Prenatal Development.Buy Now

Label Key:

1. chest wall
2. heart
3. placental vessels
4. umbilical cord
5. liver
6. amnion surrounding embryo
7. abdominal wall
All ages referenced to fertilization, not last menstrual period.
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