The lobules of liver, or hepatic lobules are small divisions of the liver defined at the microscopic (histological) scale. The hepatic lobule is a building block of the liver tissue, consisting of a portal triad, hepatocytes arranged in linear cords between a capillary network, and a central vein.Portal triadLabeled sketch of a portal canalPortal triad of a rat liver, 1 branch of hepatic artery, 2 branch of portal vein, 3 bile duct The lobules of liver, or hepatic lobules are small divisions of the liver defined at the microscopic (histological) scale. The hepatic lobule is a building block of the liver tissue, consisting of a portal triad, hepatocytes arranged in linear cords between a capillary network, and a central vein. Lobules are different from the lobes of the liver, they are the smaller divisions of the lobes. The two-dimensional microarchitecture of the liver can be viewed from multiple different perspectives: