![](/drem/stage13/labels2/S52L.gif)
![caudal part of rhombencephalon, epipharyngeal placode 2, precardinal vein, primary head vein, rhombencoel (fourth ventricle), rhombomere 1, rhombomere 2](/drem/stage13/Z0/S52N.jpg)
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Carnegie Embryo #836 | Location: 04-01-02
Keywords: caudal part of rhombencephalon, epipharyngeal placode 2, precardinal vein, primary head vein, rhombencoel (fourth ventricle), rhombomere 1, rhombomere 2
Source: The Virtual Human Embryo.