Which of the following guards the opening of hepatopancreatic duct into the duodenum?
(a) Lleocaecal valve
(b) Pyloric sphincter
(c) Sphincter of Oddi
(d) Semilunar valve
Correct option (c) Sphincter of Oddi Explanation :
Sphincter of Oddi guards the opening of hepatopancreatic duct into the duodenum. Hepatopancreatic duct brings secretion of liver as well as pancreas to the duodenum.