What is the uvula in a human mouth used for? if you can include a picture that would .

When you swallow, the uvula and the soft palate move close to the nasopharynx, preventing food from entering the nasal cavity. If this process fails, it will result in nasal regurgitation

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The uvula in a human mouth makes sure that none of the food one eats gets into the nose. This happens while a person is swallowing the food.