Surrounded by the Amnion

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

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.

Heart Chambers and Liver

Heart in Slow Motion

Surrounded by the Amnion

The Early Brain and Face

Amnion

Heart and Liver

4 weeks, 6 days