thoracic cavity vein vena cava AAO:0010215 Any of the veins that carries deoxygenated blood from a part of the body into the right atrium of the heart. BTO:0001438 EMAPA:18415 FMA:321896 GAID:547 MA:0000068 MESH:D014684 NCIT:C12817 OpenCyc:Mx4rkJQ4U6gEEdudWQACs5b6Bw UBERON:0004087 UMLS:C0042460 caval vein uberon venae cavae great vessel of heart