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Atlas of Human Embryos Chapter   Figure
 <   >  search results: facio-vestibulocochlear neural crest (CN VII and CN VIII) Search   Fig. 4-2b Fig. 4-5-5 Fig. 4-5-6 Fig. 5-2a Fig. 5-7-3

aortic sac, bulbis cordis, closing membrane of pharyngeal groove 1, cut edge of amnion, facio-vestibulocochlear neural crest (CN VII and CN VIII), left aortic arch 1, pericardial cavity, pharyngeal pouch 1, placode 7, primary head vein, rhombencephalon (preotic), right dorsal aorta, thyroid diverticulum

A section through the thyroid diverticulum and primitive bulbus cordis that is to the right of the midline.

Observe:
1. The close relation of the thyroid diverticulum to the aortic sac and first aortic arch.
2. The first pharyngeal pouch with its dorsal extension.
3. The closing membrane of the first branchial groove where the tympanic membrane (eardrum) will develop.
4. The facioacoustic crest with cells extending toward placode VII.
5. The abnormally distended pericardial cavity.


Keywords: aortic sac, bulbis cordis, closing membrane of pharyngeal groove 1, cut edge of amnion, facio-vestibulocochlear neural crest (CN VII and CN VIII), left aortic arch 1, pericardial cavity, pharyngeal pouch 1, placode 7, primary head vein, rhombencephalon (preotic), right dorsal aorta, thyroid diverticulum

Source: Atlas of Human Embryos.