The hepatic artery:

B. Provides more blood to the bile ducts than the portal vein.

D. Supplies most of the blood to hepatic metastases.

DISCUSSION: The portal vein provides two thirds to three quarters of the total hepatic blood flow. The portal vein is incapable of direct autoregulation. The hepatic artery after transplantation classically infarcts portions of the biliary system, whereas hepatic metastases often arrive there via the portal vein. Most of their blood supply comes from the hepatic artery.