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The Endowment for Human Development
The Endowment for Human Development
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Slideshow: Eyes, Ears, Mouth & Nose

The Mouth and Lips

#189, Slide 38 of 52

4 months, 1 week

From The Biology of Prenatal Development.Buy Now

Label Key:

1. nostrils
2. vermillion border
3. philtrum
4. corner of mouth
5. upper lip
6. open mouth
7. lower lip
All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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