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A physiological sphincter that briefly slows down food before it enters the stomach . it also acts to prevent stomach contents from regurgitating into the esophagus - thus protecting the esophageal mucosa from the corrosive effect of the stomach acid

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1. A physiological sphincter that briefly slows down food before it enters the stomach . it also acts to prevent stomach contents from regurgitating into the esophagus - thus protecting the esophageal mucosa from the corrosive effect of the stomach acid





 
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