anterior cardiac veins anterior cardiac veins the anterior cardiac veins (or anterior veins of right ventricle) are a variable number of small vessels (usually 2-5) which drain blood from the anterior portion of the right ventricle into the right atrium. anterior cardiac veinssternocostal surface of heart.(anterior cardiac veins not labeled, but visible at left.)arteries:rca = right coronaryab = atrial branchessanb = sinuatrial nodalrma = right marginallca = left coronarycb = circumflex branch lad/aib = anterior interventricularlma = left marginalpia/pda = posterior descendingavn = atrioventricular nodalveins:scv = small cardiacacv = anterior cardiacaiv/gcv = great cardiacmcv = middle cardiaccs = coronary sinusdetailsdrains toright atriumidentifierslatinvenae cardiacae anteriores, venae ventriculi dextri anterioresta98a12.3.01.012ta24168fma71567anatomical terminology anatomy the right marginal vein frequently opens into the right atrium, and is therefore sometimes regarded as belonging to this group. fate unlike most cardiac veins, the anterior cardiac veins not end in the coronary sinus; instead, they drain directly into the anterior wall of the right atrium.