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The Endowment for Human Development
The Endowment for Human Development
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Slideshow: Facial Expressions

Yawning

#217, Slide 25 of 31

7 months, 2 weeks

From The Biology of Prenatal Development.Buy Now

Label Key:

1. nose
2. mouth wide open
3. forehead
4. chin
5. left eye
6. cheek
7. left hand
8. left forearm
All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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