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

Image Gallery

The Body Plan Emerges

4 weeks

From The Biology of Prenatal Development.Buy Now

Label Key:

1. midbrain
2. forebrain
3. umbilical cord
4. hindbrain
5. neck
6. heart
7. left upper limb bud
All ages referenced to fertilization, not last menstrual period.
Four-Week Embryo
Four-Week Embryo
Digestive Tract, 4-Week Embryo
Digestive Tract, 4-Week Embryo
The Body Plan Emerges
The Body Plan Emerges
Right Upper Limb
Right Upper Limb
The Heart in Motion
The Heart in Motion
Central Nervous System
Central Nervous System
Help give babies a healthy start and a healthy future. Donate now.
Free resources and training for educators


Add a Comment

Your Name: Log In 3rd-party login: Facebook     Google     Yahoo

Comment: