Skip Navigation
The Endowment for Human Development
The Endowment for Human Development
Improving lifelong health one pregnancy at a time.
Donate Now Get Free Videos

Slideshow: Entire Image Gallery by EHD

Germ Layers of the Embryo

#29, Slide 47 of 312

14 days

From The Biology of Prenatal Development.Buy Now

Label Key:

1. neural groove
2. hypoblast
3. epiblast (ectoderm)
All ages referenced to fertilization, not last menstrual period.
Tell your story. Create your own pregnancy calendar.
Buy the Biology of Prenatal Development DVD