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

The Turn is Complete

#430, Slide 33 of 35

3 months, 1 week

From The Biology of Prenatal Development.Buy Now

Label Key:

1. umbilical cord
2. left ear
3. jaw
4. left upper arm
5. left thigh
6. rib outlines
All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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