Quick Facts
Origin: Left hepatic artery.
Course: Passes superiorly and to the left, arches over the left branch of the portal vein.
Branches: Bifurcates into two segmental arteries; segmental II and III arteries.
Supplied Structures: Liver segments II and III.
Origin
The lateral segmental artery arises from the left hepatic artery after it arches over the portal vein.
Course
The lateral segmental artery passes superiorly and to the left. It arches over the posterior (umbilical) portion of the left branch of the portal vein.
Branches
The lateral segmental artery bifurcates into two segmental arteries, segmental II artery (A2) and segmental III artery (A3).
Supplied Structures
The lateral segmental artery supplies segments II and III of the liver.
