Definition: The word 'ampullary' is a Greek term meaning 'stomach.' It refers to the passage from the stomach into the esophagus, a process known as the peristaltic motion, which helps in digestion by pushing food through the esophageal sphincter and into the lumen of the mouth. The exact function of this action is not entirely clear; it could be related to the digestive juices that enter the stomach via the esophagus, or it might serve a dual purpose - as part of the peristaltic motion, moving food through the body.
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