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: The Developing Brain

Surrounded by the Amnion

#58, Slide 10 of 21

4 weeks, 6 days

From The Biology of Prenatal Development.Buy Now

Note:

It's hard to imagine that the heart was once so close to the face but indeed it was!

Label Key:

1. early ear
2. midbrain
3. hindbrain
4. eye
5. forebrain
6. stomodeum
7. chest wall
8. heart
9. first pharyngeal arch
10. right anterior cardinal vein
11. neural fold
All ages referenced to fertilization, not last menstrual period.
Tell your story. Create your own pregnancy calendar.
Buy the Biology of Prenatal Development DVD