Skip Navigation
The Endowment for Human Development
The Endowment for Human Development
Improving lifelong health one pregnancy at a time.
  • English
Español
Português
Educator Login / Register
Donate Now Get Free Videos

Slideshow: Entire Image Gallery by EHD

Head and Neck

#69, Slide 71 of 312

4 weeks, 6 days

From The Biology of Prenatal Development.Buy Now

Label Key:

1. 1st pharyngeal arch (maxillary process)
2. stomodeum
3. 1st pharyngeal arch (mandibular process)
4. 2nd pharyngeal arch
5. hindbrain
6. forebrain
7. heart
8. auricular groove
9. right anterior cardinal vein
All ages referenced to fertilization, not last menstrual period.
Free resources and training for educators
Tell your story. Create your own pregnancy calendar.