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Which substance protects the lower airway from food, liquids, and other substances?

User Trungduc
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Answer:

The epiglottis

Step-by-step explanation:

A small flap of tissue called the epiglottis protects the larynx. When we swallow, the epiglottis covers the larynx to prevent food and liquid from going into the lungs and the lower airway.

User AverageHelper
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