Lower esophageal sphincter | anatomy (original) (raw)

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function in human digestive system

• 
  In esophagus
  …or lower, end is the lower esophageal sphincter.
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• In swallowing
  …end of the esophagus, the lower esophageal sphincter relaxes and food enters the stomach; the sphincter then closes again to prevent reflux of gastric juices and food materials.
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