part_of part of part of has part has part has_part contributes to morphology of anatomical entity anatomical entity portal lobule hepatic acinus hepatic artery portal triad Portal:triad.JPG MA:0002499 UMLS:C0227514 NCIT:C33342 A multi-organ-part structure that consists of three vessels of the portal lobule including the bile duct, a terminal branch of the hepatic artery and portal vein, and may also include a lymphatic vessel. trias hepatica trias hepatica The misnomer 'portal triad' traditionally has included only the first three structures, and was named before lymphatic vessels were discovered in the structure. It can refer both to the largest branch of each of these vessels running inside the hepatoduodenal ligament, and to the smaller branches of these vessels inside the liver. FMA:17523 SCTID:362192000 Wikipedia:Portal_triad UBERON:0001279 uberon portal vein intrahepatic bile duct multi organ part structure