CIEMT Emergency Medical Technician (EMT) Practice Exam

The epiglottis has which primary protective function?

Help with gas exchange Prevent food from entering the trachea Regulate airflow into the lungs Produce mucus

Correct Answer:

Prevent food from entering the trachea

Explanation:

The epiglottis mainly protects the airway by covering the opening of the larynx during swallowing to prevent food and liquids from entering the trachea. It acts like a lid that directs what you swallow into the esophagus, keeping the airway clear and reducing the risk of aspiration. Gas exchange happens in the lungs, not the epiglottis. Regulating airflow into the lungs is handled by the airway passages and muscles that adjust diameter, not by the epiglottis. Mucus is produced by goblet cells in the airway lining, not by the epiglottis itself. So, its primary protective role is preventing food from entering the trachea.

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