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Esophageal and Gastric Disorders 

Esophageal and Gastric Disorders
Chapter:
Esophageal and Gastric Disorders
Author(s):

Amy S. Oxentenko

DOI:
10.1093/med/9780190464868.003.0021
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date: 19 October 2019

The main functions of the esophagus are to transport food and prevent reflux. To transport food from the mouth to the stomach, the esophagus must work against a pressure gradient, with negative pressure in the chest and positive pressure in the abdomen. The lower esophageal sphincter helps to prevent reflux of gastric contents back into the esophagus.

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