Which of the following statements about the segmental anatomy of the liver are not true?

D. Segments are important to the understanding of the topographic anatomy of the liver.

 DISCUSSION: Segments are the major subdivision of the right and left lobes of the liver. In either the classic lobar (American) or the segmental (French) system, the most variable aspect is the biliary system. Therefore the hepatic venous or portal system defines most segments. The French system depicts eight segments, with the caudate lobe as segment I and the other seven segments defined primarily by the hepatic venous system. Segments are not well-depicted by topography.