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3-Week Embryo

3 weeks


Label Key:

  • 1. amnion
  • 2. amniotic cavity
  • 3. umbilical cord
  • 4. allantois
  • 5. yolk sac
From The Biology of Prenatal Development.Buy Now
All ages referenced to fertilization, not last menstrual period.
3-Week Embryo
3-Week Embryo
The Folding of the Embryo
The Folding of the Embryo
The 4-Week Embryo
The 4-Week Embryo
The Folding Heart
The Folding Heart
Four-Week Embryo
Four-Week Embryo
Digestive Tract, 4-Week Embryo
Digestive Tract, 4-Week Embryo
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