Editing Liver (section)

=== '''Divisions''' ===

** Historically, was divided      into (small) left lobe and (large) right lobe using the umbilical      fissure/falciform ligament, however this has been abandoned in favour of      functional anatomy
** Divisions now based on      functional anatomy - three hepatic veins that travel in three portal      scissurae (fissures/clefts), along with bile ducts and hepatic artery      branches
*** ''Right       liver/left liver is more correct than right lobe/left lobe, because       there are no external markings.''
*** Middle hepatic vein (in the       main fissure) divides liver into right and left hemilivers along       Cantlie's line
**** This plane is known as the        main fissure of the liver (see 'main fissure' below)
*** Right and left hepatic vein       scissura further divide the liver into '''four separate portal sectors''' (right anterior - V and       VIII; right posterior - VI and VII; left anterior - III and IV; left       posterior - II)