<h5>The opening between the esophagus and the cardiac portion of, the stomach (sphincter means an opening which is guarded by muscles)&nbsp;</h5>

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The opening between the esophagus and the cardiac portion of, the stomach (sphincter means an opening which is guarded by muscles)

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The opening between the esophagus and the cardiac portion of, the stomach (sphincter means an opening which is guarded by muscles)