part of part of vein portal vein A vein that conducts blood from the digestive organs, spleen, pancreas, and gallbladder to the liver[BTO]. BTO:0001792 CALOHA:TS-0814 EHDAA2:0001485 EHDAA:6510 EMAPA:17349 FMA:66645 GAID:540 MA:0002198 MESH:D011169 OpenCyc:Mx4rv_bem5wpEbGdrcN5Y29ycA UBERON:0002017 UMLS:C0032718 VHOG:0000656 XAO:0000392 galen:PortalVein portal venous tree organ part uberon portal system