Common bile duct - wikipedia Common bile duct Common bile duct Diagram of the biliary tree showing the common bile duct Details Part of Bilary tract Identifiers Latin ductus choledochus Acronym ( s ) CBD MeSH D003135 FMA 14667 Anatomical terminology ( edit on Wikidata ) 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. The front border of the liver has been lifted up ( brown arrow ). The common bile duct, sometimes abbreviated CBD, is a duct in the gastrointestinal tract of organisms that have a gall bladder. It is formed by the union of the common hepatic duct and the cystic duct ( from the gall bladder ). It is later joined by the pancreatic duct to form the ampulla of Vater. There, the two ducts are surrounded by the muscular sphincter of Oddi. When the sphincter of Oddi is closed, newly synthesized bile from the liver is forced into storage in the gall bladder. When open, the stored and concentrated bile exits into the duodenum. This conduction of bile is the main function of the common bile duct. The hormone cholecystokinin, when stimulated by a fatty meal, promotes bile secretion by increased production of hepatic bile, contraction of the gall bladder, and relaxation of the Sphincter of Oddi. Contents 1 Clinical significance 2 History 3 Additional images 4 References 5 External links Clinical significance Several problems can arise within the common bile duct. A diameter of more than 8 mm is regarded as abnormal dilatation, and is a sign of cholestasis. Diameter in adults Normal ≤ 8 mm Mild dilatation 8 -- 12 mm Moderate dilatation 12 -- 16 mm Severe dilatation 16 -- 20 mm Extremely severe dilatation > 20 mm If clogged by a gallstone, a condition called choledocholithiasis can result. In this clogged state, the duct is especially vulnerable to an infection called ascending cholangitis. Very rare deformities of the common bile duct are cystic dilations ( 4 cm ), choledochoceles ( cystic dilation of the ampula of Vater ( 3 -- 8 cm ) ), and biliary atresia. History Blockage of the common bile duct and related jaundice has been documented since at least since the time of Erasistratus. Additional images Dilatation of CBD due to Ampullary tumor. The gall - bladder and bile ducts laid open. References Jump up ^ editor - in - chief, Susan Standring ; section editors, Neil R. Borley ; et al. ( 2008 ). Gray 's anatomy : the anatomical basis of clinical practice ( 40th ed. ). London : Churchill Livingstone. pp. 1163, 1177, 1185 -- 6. ISBN 978 - 0 - 8089 - 2371 - 8. CS1 maint : Explicit use of et al. ( link ) CS1 maint : Multiple names : authors list ( link ) CS1 maint : Extra text : authors list ( link ) Jump up ^ Agabegi, Steven S. ; Agabegi, Elizabeth D. ( 23 August 2012 ). Step - Up to Medicine. Lippincott Williams & Wilkins. p. 136. ISBN 9781609133603. Jump up ^ Hoeffel, Christine ; Azizi, Louisa ; Lewin, Maité ; Laurent, Valérie ; Aubé, Christophe ; Arrivé, Lionel ; Tubiana, Jean - Michel ( 2006 ). `` Normal and Pathologic Features of the Postoperative Biliary Tract at 3D MR Cholangiopancreatography and MR Imaging ''. RadioGraphics. 26 ( 6 ) : 1603 -- 1620. doi : 10.1148 / rg. 266055730. ISSN 0271 - 5333. Jump up ^ Yunfu Lv, Wan Yee Lau, Haiying Wu, Shunwu Chang, NingLiu, Yejuan Li, Jie Deng ( 2015 ). `` Etiological Causes of Intrahepatic and Extrahepatic Bile Duct Dilatation '' ( PDF ). International Journal of New Technology and Research ( IJNTR ). 1 ( 8 ). CS1 maint : Multiple names : authors list ( link ) Jump up ^ Humes, H. David ( 2001 ). Kelley 's Essentials of Internal Medicine. Lippincott Williams & Wilkins. p. 229. ISBN 978 - 0781719377. Jump up ^ Bateson, edited by Malcolm C. ( 1986 ). Gallstone Disease and its Management. Dordrecht : Springer Netherlands. p. Epidemiology ( chapter ). ISBN 9400941730. CS1 maint : Extra text : authors list ( link ) S.E. Miederer et al. : Endoscopic transpapillary splitting of a choledochocele. Dtsch Med. Wochenschr. 1978 Feb. 3 : 103 ( 5 ) : 216,219. PMID 631041 External links Anatomy figure : 38 : 06 - 08 at Human Anatomy Online, SUNY Downstate Medical Center - `` The gallbladder and extrahepatic bile ducts. '' Anatomy image : 8336 at the SUNY Downstate Medical Center Anatomy image : 7957 at the SUNY Downstate Medical Center liver at The Anatomy Lesson by Wesley Norman ( Georgetown University ) ( biliarysystem ) hide Anatomy of the liver, pancreas and biliary tree Liver Bare area Cantlie line Ligamentum venosum Porta hepatis Round ligament Lobes of liver 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=Common_bile_duct&oldid=835835958 '' Categories : Digestive system Hepatology Gallbladder Hidden categories : Pages with unresolved properties CS1 maint : Explicit use of et al. CS1 maint : Multiple names : authors list CS1 maint : Extra text : authors list Talk Contents About Wikipedia Bosanski Català Čeština Deutsch Español Français Hrvatski Italiano Kapampangan Latina Nederlands 日本 語 Occitan Polski Português தமிழ் 8 more Edit links This page was last edited on 11 April 2018, at 02 : 03. Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: where does the common bile duct empties its contents
Answer: the duodenum