What does the epiglottis do?

What does the epiglottis do?

• A. Keeps food from going down the "wrong pipe".
• B. Controls voice pitch
• C. Filters dust from inhaled air
• D. Produces mucus to line the trachea

Answer: (A)

Protecting the airway during swallowing is the main function of the epiglottis. This leaf-shaped flap sits above the larynx and acts like a trapdoor: when you swallow it folds down to cover the opening to the trachea, directing food and liquid into the esophagus and preventing them from entering the lungs—the “wrong pipe.” While you’re breathing, it stays open to let air pass into the airway. It doesn’t control voice pitch—that’s the job of the vocal cords and surrounding muscles—nor does it filter dust or produce mucus; filtration is done by nasal passages and the mucus-producing cells lining the respiratory tract.

Protecting the airway during swallowing is the main function of the epiglottis. This leaf-shaped flap sits above the larynx and acts like a trapdoor: when you swallow it folds down to cover the opening to the trachea, directing food and liquid into the esophagus and preventing them from entering the lungs—the “wrong pipe.” While you’re breathing, it stays open to let air pass into the airway. It doesn’t control voice pitch—that’s the job of the vocal cords and surrounding muscles—nor does it filter dust or produce mucus; filtration is done by nasal passages and the mucus-producing cells lining the respiratory tract.