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The Endowment for Human Development
The Endowment for Human Development
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Base of Umbilical Cord, 7½ Weeks

7 weeks, 4 days

Base of Umbilical Cord, 7½ Weeks [Click for next image]
From The Biology of Prenatal Development.Buy Now

Note:

The presence of loops of bowel inside the umbilical cord are normal at this stage. These loops will move back into the belly by about 10 weeks after fertilization.

Note:

The knees are moving and ready to rock'n roll!

Label Key:

1. umbilical cord
2. vitelline vessels
3. loops of bowel
4. umbilical vein
5. right knee
All ages referenced to fertilization, not last menstrual period.
Close-up of the Right Knee
Close-up of the Right Knee
Close-up, Umbilical Cord at 7½ Weeks
Close-up, Umbilical Cord at 7½ Weeks
Base of Umbilical Cord, 7½ Weeks
Base of Umbilical Cord, 7½ Weeks
7½-Week Embryo
7½-Week Embryo
Fingers and Notches
Fingers and Notches
Hands Touching
Hands Touching
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