Which structure is commonly taught to prevent food from entering the trachea during swallowing?

Which structure is commonly taught to prevent food from entering the trachea during swallowing?

• A. Epiglottis
• B. Esophagus
• C. Uvula
• D. Larynx

Answer: (A)

Swallowing includes a protective mechanism that seals the airway to keep food out of the trachea. The epiglottis, a flap of cartilage at the top of the larynx, bends downward to cover the opening to the trachea (the glottis) as you swallow. This reshapes the path so the bolus is directed into the esophagus behind the trachea. The esophagus is simply the tube that carries swallowed material to the stomach, not a guard at the airway entrance. The uvula helps prevent food from entering the nasal passages, not the trachea. While the larynx moves to help protect the airway, the epiglottis is the structure that directly prevents food from entering the trachea.

Swallowing includes a protective mechanism that seals the airway to keep food out of the trachea. The epiglottis, a flap of cartilage at the top of the larynx, bends downward to cover the opening to the trachea (the glottis) as you swallow. This reshapes the path so the bolus is directed into the esophagus behind the trachea. The esophagus is simply the tube that carries swallowed material to the stomach, not a guard at the airway entrance. The uvula helps prevent food from entering the nasal passages, not the trachea. While the larynx moves to help protect the airway, the epiglottis is the structure that directly prevents food from entering the trachea.