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Reflux: definition

A condition that occurs when gastric juices or small amounts of food from the stomach flow back into the esophagus and mouth. Also called regurgitation.

Regurgitation: definition

A condition that occurs when gastric juices or small amounts of food from the stomach flow back into the esophagus and mouth. Also called reflux.

Saliva: definition

A mixture of water, protein, and salts produced in the mouth that makes food easy to swallow and begins the process of digestion.