Physiology Bile ducts Q Intrahepatic biliary tract Q Extrahepatic biliary tract Gallbladder Q Concentrates and stores hepatic bile during the fasting state and delivers bile into the duodenum in response to a meal o The gallbladder epithelial cell secretes at least two important products into the gallbladder lumen: glycoproteins and hydrogen ions Sphincter of oddi It creates a high-pressure zone between the bile duct and the duodenum o The sphincter regulates the flow of bile and pancreatic juice into the duodenum prevents the regurgitation of duodenal contents into the biliary tractPhysiology ➢Bile Ducts ◆ Intrahepatic biliary tract ◆ Extrahepatic biliary tract ➢Gallbladder ◆ Concentrates and stores hepatic bile during the fasting state and delivers bile into the duodenum in response to a meal ◆ The gallbladder epithelial cell secretes at least two important products into the gallbladder lumen: glycoproteins and hydrogen ions ➢Sphincter of Oddi ◆ It creates a high-pressure zone between the bile duct and the duodenum ◆ The sphincter regulates the flow of bile and pancreatic juice into the duodenum, prevents the regurgitation of duodenal contents into the biliary tract