Gastroesophageal
Reflux
Gastroesophageal means stomach and esophagus. Reflux refers
to flow back or return. Thus, gastroesophageal reflux is the return of the
stomach's contents back up into the esophagus.
In usual digestion, the lower esophageal sphincter open to permit
food to pass into the stomach and closes to prevent food and acidic stomach
juices from flowing back into the esophagus. Gastroesophageal reflux occur after
the lower esophageal sphincter is weak or relaxes inappropriately, allow the
stomach's contents to flow up into the esophagus.
The severity of Gastroesophageal reflux disease depends on lower
esophageal sphincter dysfunction as well as the type and amount of fluid
brought up from the stomach and the neutralizing effect of saliva.
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