human_reference_atlas has part connected to blood vessel endothelial cell Homo sapiens vein retromandibular vein superficial temporal vein transverse facial vein http://upload.wikimedia.org/wikipedia/commons/8/8c/Gray557.png transverse facial vein UBERON:0001659 A tributary of the superficial temporal or retromandibular veins, anastomosing with the facial vein. uberon MA:0002247 transverse facial vein #2 AS EMAPA:37200 transverse facial vein SCTID:151501009 transverse facial vein #2 FMA:50938