![](/drem/stage13/labels2/S66L.gif)
![aortic arch 2, copula of tongue, dorsal aorta, notochord, pharyngeal arch 2, precardinal vein, region of mesencephalic (cephalic) flexure](/drem/stage13/Z0/S66N.jpg)
![](/drem/rulerbg.png)
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Carnegie Embryo #836 | Location: 04-03-04
Keywords: aortic arch 2, copula of tongue, dorsal aorta, notochord, pharyngeal arch 2, precardinal vein, region of mesencephalic (cephalic) flexure
Source: The Virtual Human Embryo.