Comparison of the classic liver lobule, portal lobule, and liver acinus.
The area indicated in blue shows the territory of each of the three units relating to liver organization and function. The classic lobule has the terminal hepatic venule (central vein) at the center of the lobule and the portal canals containing portal triads at the peripheral angles of
the lobule. The portal lobule has a portal canal at the center of the lobule and terminal hepatic venules (central veins) at the peripheral angles of the lobule. The liver acinus has distributing vessels at the equator and terminal hepatic venules (central veins) at each pole.
central vein central vein central vein portal canals portal canals portal canals
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