Study Companion

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Q26) Which of the following guards the opening of hepatopancreatic duct into the duodenum ? …[AIPMT-2016]

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Semilunar valves permit blood to be forced into the arteries, and prevent backflow from the arteries into the ventricles

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The ileocecal valve (ICV) is the joining point between the large and small intestines. it control the flow between these two areas to serve as a barrier to prevent the bacteria laden contents of the large bowel from contaminating the small intestine.

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Pyloric sphincteracts as a valve to controls the flow of partially digested food from the stomach to the small intestine.


The Sphincter Oddi is a small smooth muscle sphincter strategically placed at the junction of the bile duct, pancreatic duct, and duodenum. The sphincter controls flow of bile and pancreatic juices into the duodenum and prevents reflux of duodenal content into the ducts.