True about brachiocephalic vein is all except
Right brachiocephalic vein joins left brachiocephalic vein at 1st costal cailage to form superior vena cava. this is present in the superior mediastinum Ref: Gray's 38e/p1026
Formed behind sternoclavicular joint
Left vein is longer
Right runs veical
Right vein unite at 1st costal cailage
General anatomy