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Question

Sphincter of oddi is present at:

A
Junction of jejunum and duodenum
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B
Ileo-caecal junction
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C
Junction of hepato-pancreatic duct and duodenum
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D
Gastro-oesophageal junction
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Solution

The correct option is C Junction of hepato-pancreatic duct and duodenum
Opening of the hepato-pancreatic duct into the duodenum is guarded by a sphincter of Oddi.

The opening of ileum into caecum is guraded by the ileo-caecal valve.
The undigested food enters into the caecum of the large intestine through an ileo-caecal valve, which prevents the backflow of the faecal matter.

At the gastro-oesophageal junction, there is a gastro-oesophageal sphincter that controls the passage of food into the stomach.

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