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Touching Thumbs

3 months

Buy NowFrom The Biology of Prenatal Development.

Note:

One reason the thumb is unique among the fingers is the presence of only one joint instead of two.

Label Key:

  • 1. nail field
  • 2. right thumb
  • 3. vein

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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Touching Thumbs
Touching Thumbs
Three-Month Fetus
Three-Month Fetus
Fingertips of Right Hand
Fingertips of Right Hand
Roof of the Mouth
Roof of the Mouth
Meconium Release
Meconium Release
Right Hand Covering Face
Right Hand Covering Face
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