What prevents acid from backing up into the esophagus from the stomach?
A)pyloric sphincter
B)lower esophageal sphincter
C)rugae
D)adventitia

Name: What prevents acid from backing up into the esophagus from the stomach? A)pyloric sphincter B)lower esophageal sphincter C)rugae D)adventitia
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Question

Quizplus · Accepted Answer

The lower esophageal sphincter (LES) is a muscular ring located at the junction of the esophagus and stomach. It acts as a valve to prevent stomach acid and contents from flowing back up into the esophagus.

What Prevents Acid from Backing Up into the Esophagus from the Stomach