Anatomy of the extrahepatic bile ducts. Extrahepatic bile ducts are small tubes that carry bile outside of the liver. They are made up of the common hepatic duct (hilum region) and the common bile duct (distal region). Bile is made in the liver and flows through the common hepatic duct and the cystic duct to the gallbladder, where it is stored. Bile is released from the gallbladder when food is being digested.
Anatomy of the intrahepatic bile ducts. Intrahepatic bile ducts are a network of small tubes that carry bile inside the liver. The smallest ducts, called ductules, come together to form the right hepatic bile duct and the left hepatic bile duct, which drain bile from the liver. Bile is stored in the gallbladder and is released when food is being digested.