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The Endowment for Human Development
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Slideshow: The Heart

Head and Heart

#71, Slide 11 of 34

4 weeks, 6 days

From The Biology of Prenatal Development.Buy Now

Note:

If you look just above the heart, it seems like you can look right through the chest.

Label Key:

1. forebrain
2. 1st pharyngeal arch (maxillary process)
3. mouth (stomodeum)
4. 1st pharyngeal arch (mandibular process)
5. auricular groove
6. 2nd pharyngeal arch
7. 3rd pharyngeal arch
8. chest wall
9. liver
10. heart
11. cervical sinus
All ages referenced to fertilization, not last menstrual period.
Heart ChambersThe Folding HeartThe Folding of the EmbryoFour-Week EmbryoThe Body Plan EmergesThe Heart in MotionHeart Chambers and LiverHeart in Slow MotionSurrounded by the AmnionHeart and LiverHead and HeartHeart and BrainHead and HeartLiver, Cord, and Left Foot PlateClose-up of Heart and LiverHeart and LiverThe Heart and LiverThe Vital OrgansHand Plate and Vital OrgansLeft Hand Plate and WristThe HeartThe Brain, Heart, and LiverThe Hand in MotionThe Face and TrunkLeft Hand and Vital OrgansThe Beating Heart and LiverThe Liver and Beating HeartThe Heart and BrainThe Four-Chambered HeartThe Hand, Chest, and LiverThe Heart and HandThe Beating HeartThe Heart and ChestClose-up, Seven-Week Heart
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