part_of part of part of connected to connected to system anterior vena cava vein brachiocephalic vein http://upload.wikimedia.org/wikipedia/commons/9/9e/Gray1174.png EHDAA2:0000182 innominate vein OpenCyc:Mx4rvz3aUJwpEbGdrcN5Y29ycA EHDAA:9868 UBERON:0003711 innominate veins uberon vena brachiocephalica innomiate vein FMA:4723 NCIT:C32816 GAID:529 innominate vein UMLS:C0006095 The left and right brachiocephalic veins in the upper chest are formed by the union of each corresponding internal jugular vein and subclavian vein. This is at the level of the sternoclavicular joint. These great vessels merge to form the superior vena cava. The brachiocephalic veins are the major veins returning blood to the superior vena cava. venae anonyma MESH:D016121 innominate trunk galen:BrachiocephalicVein brachiocephalic venous tree brachiocephalic vasculature