Skip Navigation

Little One Pregnancy Calendar & Journal
Log in

Baby’s Pregnancy Calendar

Three-Week Embryo

3 weeks old / 5 weeks pregnant (since LMP)
From The Biology of Prenatal Development.Buy Now

Note:

A week ago, I couldn't even spell brains but now that I am older, I have one of my own!

Label Key:

  • 1. forebrain
  • 2. midbrain
  • 3. hindbrain
  • 4. area where spine is developing

Hide Labels | Larger
Three-Week Embryo
Three-Week Embryo
The Folding of the Embryo
The Folding of the Embryo
Heart Chambers and Liver
Heart Chambers and Liver
Heart in Slow Motion
Heart in Slow Motion
The Early Brain and Face
The Early Brain and Face
Amnion
Amnion
Previous Set Previous Picture Next Set Next Picture