![](/drem/stage13/labels2/S27L.gif)
![head mesenchyme, mantle layer, marginal layer, otic vesicle, otic vesicle cavity, posterior dural venous plexus, rhombencoel (fourth ventricle), rhombomere 6, roof plate, surface ectoderm](/drem/stage13/Z0/S27N.jpg)
![](/drem/rulerbg.png)
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Carnegie Embryo #836 | Location: 02-03-01
Keywords: head mesenchyme, mantle layer, marginal layer, otic vesicle, otic vesicle cavity, posterior dural venous plexus, rhombencoel (fourth ventricle), rhombomere 6, roof plate, surface ectoderm
Source: The Virtual Human Embryo.