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Umbilical Cord and Amnion

6 weeks, 6 days

From The Biology of Prenatal Development.Buy Now

Note:

The umbilical cord passes through the amnion to reach the placenta. Within the umbilical cord, the umbilical vein is larger than the umbilical arteries. It is also brighter in color because the blood it carries holds more oxygen.

Label Key:

  • 1. amnion
  • 2. umbilical artery
  • 3. placental vessels
  • 4. umbilical vein

All ages referenced to fertilization, not last menstrual period.
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Umbilical Cord and Amnion
Umbilical Cord and Amnion
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The Liver and Beating Heart
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Right Hand and Nipple
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The Heart and Brain
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Left Hand and Left Eye
Close-up, Seven-Week Heart
Close-up, Seven-Week Heart
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