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

Not Happy

#458, Slide 18 of 31

6 months, 2 weeks

From The Biology of Prenatal Development.Buy Now

Note:

Complex facial expressions are first seen about 11 weeks after fertilization. At the moment, this little one appears unhappy with the service!

Label Key:

1. ear
2. eyebrow
3. cheek
4. left eye
All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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