[An arterial branch arising from the anterior cerebral artery. It includes the callosomarginal artery, frontopolar artery, medial orbitofrontal artery, pericallosal artery, and recurrent artery of Heubner.]
[The epithelial layer covering the biliary system. This includes the epithelium of the gallbladder (when present) as well as the intrahepatic and extrahepatic bile ducts.]
[Predominantly extrahepatic bile duct which is formed by the junction of the right and left hepatic ducts, which are predominantly intrahepatic, and, in turn, joins the cystic duct to form the common bile duct[GAID]. The common hepatic duct is the duct formed by the convergence of the right hepatic duct (which drains bile from the right functional lobe of the liver) and the left hepatic duct (which drains bile from the left functional lobe of the liver). The common hepatic duct then joins the cystic duct coming from the gallbladder to form the common bile duct[WP].]
