<prompt> All are true about liver histology exceptPoal space contain bile duct, poal vein, hepatic aeryHepatic lobule is functional unitZone I is well oxygenatedCentral vein drains lobule  <response>: B i.e. Hepatic lobule is functional unitPoal canal space contains branches of bile duct, poal vein and hepatic aery. The functional unit of liver is acinus. Central poion of acinus zone 1 is well oxygenated and peripheral zone 3 is least oxygenated. Liver lobule is liver tissue drained by single branch of central vein. 