thoracic cavity vein vena cava http://upload.wikimedia.org/wikipedia/commons/3/35/Relations_of_the_aorta,_trachea,_esophagus_and_other_heart_structures.png https://ccf-ontology.hubmapconsortium.org/objects/v1.2/VH_F_Blood_Vasculature.glb https://ccf-ontology.hubmapconsortium.org/objects/v1.2/VH_M_Blood_Vasculature.glb https://upload.wikimedia.org/wikipedia/commons/7/7c/Heart_numlabels.png MA:0000068 caval vein venae cavae GAID:547 uberon SCTID:244405007 FMA:321896 EMAPA:18415 UMLS:C0042460 MESH:D014684 AAO:0010215 UBERON:0004087 BTO:0001438 NCIT:C12817 Any of the veins that carries deoxygenated blood from a part of the body into the right atrium of the heart. Wikipedia:Venae_cavae great vessel of heart