tributary of tributary of Homo sapiens common palmar digital vein proper palmar digital vein tributary of common palmar digital vein Some sources distinguish between the "proper palmar digital veins", which are more distal, and the "common palmar digital veins", which are more proximal. proper palmal vein distal palmar digital vein common palmar digital venous tributary MA:0002126 proper palmar vein FMA:22926 UBERON:0004561 EMAPA:37229 forelimb digital vein