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The structure that covers the opening to the trachea during swallowing, thereby preventing food from entering the air passageway, is the
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The structure that covers the opening to the trachea during swallowing, thereby preventing food from entering the air passageway, is the

User Kalkronline
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The epiglottis is a flap that covers the opening to the trachea when you swallow.

Hope this helps!
User Magnus Buvarp
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