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

Semilunar valve

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Ileocaecal valve

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Pyloric sphincter

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Sphincter of Oddi

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Solution

The correct option is A Sphincter of Oddi
The sphincter of Oddi (or hepatopancreatic sphincter) is a muscular valve made up of smooth muscles that control the flow of digestive juices (bile and pancreatic juice) through the ampulla of Vater into the second part of the duodenum by the movement of muscular wall. It surrounds the end portion of the bile duct and pancreatic duct and hence, called as a hepatopancreatic sphincter.

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Similar questions

Column I	Column II
A. Sphincter of ani internus	1. Opening of hepatopancreatic duct into duodenum.
B. Cardiac sphincter	2. Between duodenum and posterior stomach.
C. Sphincter of Oddi	3. Guarding the terminal part of alimentary canal.
D. Ileocaecal	4. Between oesophagus and anterior stomach.
E. Pyloric sphincter	5. Between small intestine and bowel.

	Column I (Sphincter)		Column II (Location)
A.	Sphincter ani Internus	(i)	Opening of hepatopancreatic ampulla into duodenum
B.	Cardiac sphincter	(ii)	Between duodenum and posterior stomach
C.	Sphincter of Oddi	(iii)	Guarding the terminal part of alimentary canal
D.	Ileocaecal sphincter	(iv)	Between oesophagus and anterior stomach
E.	Pyloric sphincter	(v)	Between small intestine and large intestine

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