The pharynx takes in the air inhaled through the oral cavity and oropharynx. As the air enters the laryngopharynx, the epiglottis diverts it to the opening of the larynx. The pharynx’s dual role for both digestion and respiratory functions requires that there be a safeguard to prevent food from “going down the wrong way.” To ensure food enters the esophagus and not the trachea, the epiglottis closes, preventing aspiration.

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