part of develops from ends during starts during vein venous endothelium internal jugular vein xenopus_anatomy UBERON:0001586 XAO:0000382 The main dorsal head vein, it drains into the Duct of Cuvier, and collects blood from the dorsal jaw region, cerebral veins, the ophthalmic vein and the short pharyngeal vein. It forms loop around the olfactory bulb by NF stage 43. death head vasculature NF stage 43