human_reference_atlas has part connected to vein endothelial cell Homo sapiens posterior vena cava renal vein http://upload.wikimedia.org/wikipedia/commons/7/76/Gray1122.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 FMA:14334 Either of the pair of major vessels which arise from the renal hilus and return blood from the kidneys, suprarenal gland and the ureter to the inferior vena cava. vein of kidney renal vein renal venous tree UMLS:C0035092 UBERON:0001140 BTO:0002681 in EHDAA2, the renal vein is part of the kidney MESH:D012082 galen:RenalVein Wikipedia:Renal_vein renal vein NCIT:C33462 EHDAA:8722 AS kidney vein venae renales uberon GAID:544 SCTID:116358006 MA:0002210 EHDAA2:0001602 EMAPA:28376 The renal veins are veins that drain the kidney. They connect the kidney to the inferior vena cava. It is usually singular to each kidney, except in the condition 'multiple renal veins'. It also divides into 2 divisions upon entering the kidney: the anterior branch which receives blood from the anterior portion of the kidney and, the posterior branch which receives blood from the posterior portion. Often, each renal vein will have a branch that receives blood from the ureter. [WP,unvetted][Wikipedia:Renal_vein]. vein