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The Lower Embryo

4 weeks, 6 days

Buy NowFrom The Biology of Prenatal Development.

Note:

The amnion is particularly well seen here.

Label Key:

  • 1. chest wall
  • 2. heart
  • 3. wall of the womb
  • 4. blood vessels of the placenta
  • 5. umbilical cord
  • 6. liver
  • 7. amnion
  • 8. wall of the belly

All ages referenced to fertilization, not last menstrual period.
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The Lower Embryo
The Lower Embryo
( 4 weeks, 6 days)
The Lower Limbs and Back
The Lower Limbs and Back
( 5 weeks, 2 days)
Brain and Spinal Cord
Brain and Spinal Cord
( 5 weeks, 2 days)
Heart and Brain
Heart and Brain
( 5 weeks, 6 days)
Head and Heart
Head and Heart
( 5 weeks, 6 days)
Close-up of Heart and Liver
Close-up of Heart and Liver
( 5 weeks, 6 days)
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