![](/drem/stage9/labels/S31L.gif)
![foregut primordium (lumen), interventricular sulcus, neural fold, presumptive right atrium, primordial left dorsal aorta, primordial pericardial cavity, septum transversum](/drem/stage9/Z0/S31N.jpg)
![](/drem/rulerbg.png)
0 μm
Carnegie Embryo #3709 | Location: 01-03-10
Keywords: foregut primordium (lumen), interventricular sulcus, neural fold, presumptive right atrium, primordial left dorsal aorta, primordial pericardial cavity, septum transversum
Source: The Virtual Human Embryo.