Biliary tract - wikipedia Biliary tract Biliary tract Ducts of the biliary tract Details Function Facilitate movement of bile, which aids in fat absorption Anatomical terminology ( edit on Wikidata ) The biliary tract, ( biliary tree or biliary system ) refers to the liver, gall bladder and bile ducts, and how they work together to make, store and secrete bile. Bile consists of water, electrolytes, bile acids, cholesterol, phospholipids and conjugated bilirubin. Some components are synthesised by hepatocytes ( liver cells ), the rest are extracted from the blood by the liver. Bile is secreted by the liver into small ducts that join to form the common hepatic duct. Between meals, secreted bile is stored in the gall bladder. During a meal, the bile is secreted into the duodenum to rid the body of waste stored in the bile as well as aid in the absorption of dietary fats and oils. Contents 1 Structure 2 Function 3 Clinical significance 4 References Structure 1. Bile ducts : 2. Intrahepatic bile ducts, 3. Left and right hepatic ducts, 4. Common hepatic duct, 5. Cystic duct, 6. Common bile duct, 7. Ampulla of Vater, 8. Major duodenal papilla 9. Gallbladder, 10 -- 11. Right and left lobes of liver. 12. Spleen. 13. Esophagus. 14. Stomach. 15. Pancreas : 16 : Accessory pancreatic duct, 17 : Pancreatic duct. 18. Small intestine : 19. Duodenum, 20. Jejunum 21 -- 22 : Right and left kidneys ( silhouette ). The anterior border of the liver is lifted upwards ( brown arrow ). Gallbladder with Longitudinal section, pancreas and duodenum with frontal one. Intrahepatic ducts and stomach in transparency. The biliary tract refers to the path by which bile is secreted by the liver then transported to the duodenum, the first part of the small intestine. A structure common to most members of the mammal family, the biliary tract is often referred to as a tree because it begins with many small branches which end in the common bile duct, sometimes referred to as the trunk of the biliary tree. The duct, the branches of the hepatic artery, and the portal vein form the central axis of the portal triad. Bile flows in the direction opposite to that of the blood present in the other two channels. The system is usually referred to as the biliary tract or system, and can include the use of the term `` hepatobiliary '' when used to refer just to the liver and bile ducts. The name biliary tract is used to refer to all of the ducts, structures and organs involved in the production, storage and secretion of bile. The tract is as follows : Bile canaliculi > > Canals of Hering > > intrahepatic bile ductule ( in portal tracts / triads ) > > interlobular bile ducts > > left and right hepatic ducts > > These merge to form the common hepatic duct This exists the liver and joints with the cystic duct from gall bladder Together these form the common bile duct which joins with the pancreatic duct These pass through the ampulla of Vater and enter the duodenum Function Bile is secreted by the liver into small ducts that join to form the common hepatic duct. Between meals, secreted bile is stored in the gall bladder, where 80 % - 90 % of the water and electrolytes can be absorbed, leaving the bile acids and cholesterol. During a meal, the smooth muscles in the gallbladder wall contract, leading to the bile being secreted into the duodenum to rid the body of waste stored in the bile as well as aid in the absorption of dietary fats and oils by solubilizing them using bile acids. Clinical significance Pressure inside in the biliary tree can give rise to gallstones and lead to cirrhosis of the liver. The biliary tract can also serve as a reservoir for intestinal tract infections. Since the biliary tract is an internal organ, it has no somatic nerve supply, and biliary colic due to infection and inflammation of the biliary tract is not a somatic pain. Rather, pain may be caused by luminal distension, which causes stretching of the wall. This is the same mechanism that causes pain in bowel obstructions. An obstruction of the biliary tract can result in jaundice, a yellowing of the skin and whites of the eyes. References Jump up ^ Biliary tract at the US National Library of Medicine Medical Subject Headings ( MeSH ) Jump up ^ Dorland 's ( 2012 ). Dorland 's Illustrated Medical Dictionary ( 32nd ed. ). Elsevier. p. 846. ISBN 978 - 1 - 4160 - 6257 - 8. Jump up ^ Dorland 's ( 2012 ). Dorland 's Illustrated Medical Dictionary ( 32nd ed. ). Elsevier. p. 1946. ISBN 978 - 1 - 4160 - 6257 - 8. Jump up ^ `` Definition : biliary tract from Online Medical Dictionary ''. Anatomy of the liver, pancreas and biliary tree Liver Bare area Cantlie line Ligamentum venosum Porta hepatis Round ligament Lobes Left Right ( Caudate Quadrate ) Fibrous capsule of Glisson Perisinusoidal space Liver sinusoid Periportal space Portal triad Lobules of liver Liver segment Microanatomy Hepatocyte Hepatic stellate cell Kupffer cell Biliary tract Bile ducts Intrahepatic bile ducts Bile canaliculus Canals of Hering Interlobular Left hepatic duct Right hepatic duct Common hepatic duct Gallbladder Cystic duct Common bile duct Ampulla of Vater Sphincter of Oddi Cells Cholecystocyte Pancreas Gross Tail Body Neck Head ( Uncinate process ) Ducts main accessory Microanatomy Pancreatic islets Centroacinar cell Stellate cell Retrieved from `` https://en.wikipedia.org/w/index.php?title=Biliary_tract&oldid=801217797 '' Categories : Hepatology Hidden categories : All articles with unsourced statements Articles with unsourced statements from April 2010 Talk Contents About Wikipedia Čeština Ελληνικά فارسی Português Edit links This page was last edited on 18 September 2017, at 11 : 43. 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Question: where does bile go after it leaves the gallbladder
Answer: duodenum