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Home  >>  JEEMAIN and NEET  >>  Biology  >>  Human Physiology

_______ regulates the opening of oesophagus into the stomach. The opening of the stomach into the duodenum is guarded by ________ .


( A ) A fold of mucous membrane, the pyloric sphincter
( B ) Gastro-oesophageal sphincter, the pyloric sphincter
( C ) A fold of mucous membrane, muscular sphincter
( D ) Muscular sphincter, a fold of mucous membrane
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1 Answer

(B) is the right answer.

A muscular sphincter (gastro-oesophageal) regulates the opening of oesophagus into the stomach. The opening of the stomach into the duodenum is guarded by the pyloric sphincter.
answered Apr 3, 2014 by pady_1
 

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