What is at the end of the esophagus,”a circular muscle, called the lower esophageal sphincter (LES)
which prevents the acid inside of the stomach from splashing up and damaging the esophagus”
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What is at the end of the esophagus,”a circular muscle, called the lower esophageal sphincter (LES)
which prevents the acid inside of the stomach from splashing up and damaging the esophagus”