part_of part of part of vessel drains blood from heart vein myocardium heart blood vessel cardiac vein EHDAA2:0004507 galen:CoronaryVein NCIT:C12882 SCTID:277726009 cardiac vein Vein of heart that drains the myocardium. vein of heart ZFA:0005814 FMA:12846 coronary vein Wikipedia:Coronary_circulation NCIT:C12878 heart vein coronary vein UBERON:0004148 thoracic vein systemic vein