At the end of the esophagus, a muscular ring called() allows food to enter the stomach and then squeezes to keep food from flowing back up into the esophagus.

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1Esophagus: Anatomy, Function & Conditions - Cleveland Clinic

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2Anatomy and Physiology of the Esophagus | SpringerLink

springer

3Esophageal anatomy and physiology - ScienceDirect

Science direct

理解问题At the end of the esophagus, a muscular ring called() allows food to enter the stomach and then squeezes to keep food from flowing back up into the esophagus.

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At the end of the esophagus, a muscular ring called() allows food to enter the stomach and then squeezes to keep food from flowing back up into the esophagus.

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At the end of the esophagus, a muscular ring called() allows food to enter the stomach and then squeezes to keep food from flowing back up into the esophagus.

What is the function of the lower esophageal sphincter?

What is the role of the muscular ring in the esophagus?

How does the esophageal sphincter prevent acid reflux?

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