This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
All are true about liver histology except 
Select and explain. 
A. Poal space contain bile duct, poal vein, & hepatic aery, B. Hepatic lobule is functional unit, C. Zone I is well oxygenated, D. Central vein drains lobule
B: Hepatic lobule is functional unit
Answer: B: Hepatic lobule is functional unit 
Explanation: 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.