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Head and Heart

4 weeks, 4 days

Buy NowFrom The Biology of Prenatal Development.

Note:

The beginnings of the mouth and facial bones are already in position.

Label Key:

  • 1. 1st pharyngeal arch (maxillary process)
  • 2. midbrain
  • 3. 1st pharyngeal arch (mandibular process)
  • 4. placental vessel
  • 5. forebrain
  • 6. chest wall
  • 7. area of future mouth (stomodeum)
  • 8. heart
  • 9. 2nd pharyngeal arch

All ages referenced to fertilization, not last menstrual period.
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Head and Heart
Head and Heart
The Head and Mouth
The Head and Mouth
Heart Chambers and Liver
Heart Chambers and Liver
Heart in Slow Motion
Heart in Slow Motion
Surrounded by the Amnion
Surrounded by the Amnion
The Early Brain and Face
The Early Brain and Face
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