A<unk>  is any of a number of long tube-like structures that carry bile.
Bile, required for the digestion of food, is excreted by the liver into passages that carry bile toward the hepatic<unk> , which joins with the cystic<unk>  (carrying bile to and from the gallbladder) to form the common<unk> , which opens into the intestine.
The biliary tree (see below) is the whole network of various sized<unk> s branching through the liver.
The path is as follows: Bile canaliculi → Canals of Hering → interlobular<unk> s → intrahepatic<unk> s → left and right hepatic<unk> s merge to form → common hepatic<unk>  exits liver and joins → cystic<unk>  (from gall bladder) forming → common<unk>  → joins with pancreatic<unk>  → forming ampulla of Vater → enters duodenum
Bile duct
Common bile duct
Pancreatin
Hepatic portal system
Gallbladder
Hepatic vein
Pancreas
Cloaca 