ARRT Vascular Interventional Practice Exam 2026 - Free Vascular Interventional Radiography Practice Questions and Study Guide

The right lobe of the liver is typically divided into functional segments based on the Couinaud classification, which organizes the liver into eight segments. In this classification, the right lobe is specifically made up of segments five, six, seven, and eight. These segments are described in terms of their positioning relative to the main hepatic and portal structures.

The correct description, referring to the composition of the right lobe, uses the terms superior and inferior, which corresponds to segmental designations. Segment six and seven can be described as the superior aspects of the right lobe, while segments five and eight can be associated with the inferior aspects. This anatomical organization reflects the way blood supply and biliary drainage are managed within the liver, providing a clear understanding of the liver’s metabolic functions and surgical relevance.

Terms like anterior, posterior, medial, lateral, and inferior are not consistent with how the segments of the right lobe are segmented in anatomical nomenclature. Therefore, superior and inferior accurately represent the segmental anatomy of the right lobe of the liver.