As food is swallowed it is prevented from coming into contact with air and entering the trachea by the

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Quizplus · Accepted Answer

The epiglottis is a flap of tissue that covers the opening of the trachea during swallowing, preventing food and liquid from entering the airway. The pharynx, larynx, and bronchioles are also part of the respiratory system but do not directly play a role in preventing food from entering the trachea. Saliva helps to moisten and break down food, but does not prevent it from entering the trachea.

As Food Is Swallowed It Is Prevented from Coming into Contact