2. Internal Structure: Liver lobule Liver Lobule a Acentral vein(coalesce into hepatic veins, which empty Detail of Lobule into the vena cava) Branch of 04-6 portal triad(branches of hepatic artery, hepatic portal Bile duct vein and bile duct) Branch of hepatic portal vein2. Internal Structure: Liver lobule ❑ A central vein (coalesce into hepatic veins, which empty into the vena cava) ❑ 4-6 portal triad (branches of hepatic artery, hepatic portal vein and bile duct)