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The Folding of the Embryo

3 weeks, 3 days


Note:

My heart began beating about 22 days after fertilization—and just in the nick of time!

Note:

My brain and spinal cord are growing faster than everything else and my shape is curving more each day.

Label Key:

  • 1. heart
  • 2. digestive tract
  • 3. location of future mouth opening
From The Biology of Prenatal Development.Buy Now
All ages referenced to fertilization, not last menstrual period.
The Folding of the Embryo
The Folding of the Embryo
( 3 weeks, 3 days)
Heart Chambers and Liver
Heart Chambers and Liver
( 4 weeks, 4 days)
Heart in Slow Motion
Heart in Slow Motion
( 4 weeks, 4 days)
The Early Brain and Face
The Early Brain and Face
( 4 weeks, 6 days)
Amnion
Amnion
( 4 weeks, 6 days)
Heart and Liver
Heart and Liver
( 4 weeks, 6 days)
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