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...  that supports the mucusa and combines the mucosa to the smooth muscle. Muscularis externa, which is responsible for the control of swallowing in the upper and lower potions of the esophagus. The adventitia is the outermost connective tissue of the esophagus. The esophagus carries food to the stomach by coordinating the contractions of the muscular lining. This is an involuntary process that  ...

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