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Barrett's Esophagus

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Normal Function of the Esophagus

The esophagus seems to have only one important function in the body - to carry food, liquids, and saliva from the mouth to the stomach. The stomach then acts as a container to start digestion and pump food and liquids into the intestines in a controlled process. Food can then be properly digested over time, and nutrients can be absorbed by the intestines.

The esophagus transports food to the stomach by coordinated contractions of its muscular lining. This process is automatic and people are usually not aware of it. Many people have felt their esophagus when they swallow something too large, try to eat too quickly, or drink very hot or very cold liquids. They then feel the movement of the food or drink down the esophagus into the stomach, which may be an uncomfortable sensation.

The muscular layers of the esophagus are normally pinched together at both the upper and lower ends by muscles called sphincters. When a person swallows, the sphincters relax automatically to allow food or drink to pass from the mouth and into the stomach. The muscles then close rapidly to prevent the swallowed food or drink from leaking out of the stomach back into the esophagus or into the mouth.

These muscles make it possible to swallow while lying down or even upside down. When people belch to release swallowed air or gas from carbonated beverages, the sphincters relax and small amounts of food or drink may come back up briefly; this condition is called reflux. The esophagus quickly squeezes the material back into the stomach, and this is considered normal.

While these functions of the esophagus are obviously an important part of everyday life, people who must have their esophagus removed, for example because of cancer, can live a relatively healthy life without it.

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References:
digestive.niddk.nih.gov

The information discussed above is a general overview and does not include all the facts, or include everything there is to know about any medicine and/or products mentioned. Do not use any medicine and/or products without first talking to your doctor. Possible side effects of medications, other than those listed, may occur. Other brand names or generic forms of this medicine may also be available. If you have questions or concerns, or want more information, your doctor or pharmacist has the complete prescribing information about this medicine and possible drug interactions.