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Three-Week Embryo

3 weeks

Buy NowFrom The Biology of Prenatal Development.

Label Key:

  • 1. amnion
  • 2. yolk sac
  • 3. embryo
  • 4. amniotic cavity

All ages referenced to fertilization, not last menstrual period.
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Three-Week Embryo
Three-Week Embryo
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
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