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Which of the following guards the opening of hepatopancreatic duct into the duodenum?

1. Semilunar valve
2. Ileocecal valve
3. Pyloric sphincter
4. Sphincter of Oddi

Correct answer: Sphincter of Oddi

Solution

The sphincter of Oddi is the smooth muscle valve that surrounds the opening of the hepatopancreatic duct into the duodenum. It controls the release of bile and pancreatic juice into the small intestine.

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