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The Endowment for Human Development
The Endowment for Human Development
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The Left Arm in Motion

8 weeks

From The Biology of Prenatal Development.Buy Now

Note:

Exercise is almost always a good idea. Watch the movie to see this embryo's left arm in motion.

Label Key:

1. left shoulder
2. elbow
3. upper arm in motion
4. chest wall
5. nipple
All ages referenced to fertilization, not last menstrual period.
The Left Hand and Face
The Left Hand and Face
Mouth and Tongue
Mouth and Tongue
The Left Arm in Motion
The Left Arm in Motion
Arteries of the Hand
Arteries of the Hand
Partial Fusion of the Eyelids
Partial Fusion of the Eyelids
The Toes Face Off
The Toes Face Off
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