<prompt> Which of the followings distribution is used for segmental division of liver?Hepatic veins and portal veinHepatic veins and bile ductsPortal vein and bile ductsPortal vein and hepatic artery  <response>: Ans. is a i.e., Hepatic veins and portal vein o Based on the distribution of the portal vein and hepatic vein, couinaud divided functional lobes of liver into eight segments.Right lobeLeft lobeo Anterior Right anterior inferior - Segment V Right anterior superior - Segement VIIIo Posterior Right posterior inferior - Segment VI Right posterior superior - Segment VIIo Lateral Left lateral superior - Segment II Left lateral inferior - Segment IIIo Medial Segment IV Quadrate lobei Left medial superior - IV aii Left medial inferior - IV bo Caudate lobe segment I is posterior segment 