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The Endowment for Human Development
The Endowment for Human Development
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Close-up of Umbilical Cord

7 weeks, 4 days

Close-up of Umbilical Cord [Click for next image]
From The Biology of Prenatal Development.Buy Now

Note:

There are normally 2 umbilical arteries and 1 umbilical vein. The umbilical vein carries oxygen-rich blood from the placenta to the embryo and is recognizable by its larger size and brighter red color.

Label Key:

1. placental vessels
2. umbilical vein
3. placenta
4. umbilical arteries
All ages referenced to fertilization, not last menstrual period.
Hand in Motion
Hand in Motion
The Umbilical Vein
The Umbilical Vein
Close-up of Umbilical Cord
Close-up of Umbilical Cord
Left Hand, Upper & Lower Jaw
Left Hand, Upper & Lower Jaw
The Collar Bone and Ear
The Collar Bone and Ear
Right Eye, Hand-Face Contact
Right Eye, Hand-Face Contact
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