Question

In human being, sphincter of Oddi is situated in

• A. Common bile duct
• B. Ampulla of vater
• C. Main pancreatic duct
• D. Common hepatic duct

Answer 1

The correct option is B Ampulla of vater

Various smooth muscle sphincters regulate the flow of bile and pancreatic juice through the ampulla: the sphincter of the pancreatic duct, the sphincter of the bile duct, and the hepatopancreatic sphincter (Sphincter of Oddi).The sphincter of Oddi controls the introduction of bile and pancreatic secretions into the duodenum, as well as preventing the entry of duodenal contents into the ampulla.