![](/drem/stage9/labels/S16L.gif)
![aortic arch 1, artifact separation(s), artifact space(s), foregut endoderm, foregut primordium (lumen), head mesenchyme, notochordal plate, pharyngeal pouch 1, primordial pericardial cavity, umbilical vesicle attachment](/drem/stage9/Z0/S16N.jpg)
![](/drem/rulerbg.png)
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Carnegie Embryo #3709 | Location: 01-02-09
Keywords: aortic arch 1, artifact separation(s), artifact space(s), foregut endoderm, foregut primordium (lumen), head mesenchyme, notochordal plate, pharyngeal pouch 1, primordial pericardial cavity, umbilical vesicle attachment
Source: The Virtual Human Embryo.