Which structure in the throat houses the vocal cords and is involved in breathing and sound production?

• A. Trachea
• B. Esophagus
• C. Pharynx
• D. Larynx

Answer: (D)

The larynx, or voice box, houses the vocal cords and plays a dual role in breathing and sound production. Air passes through the larynx, and the vocal cords inside vibrate as air escapes, creating sound; muscles adjust the tension and length of the cords to change pitch and loudness. The trachea is the windpipe that simply conducts air to the lungs, not where the cords are located. The pharynx is a passageway behind the mouth and nose that guides air and food but does not contain the vocal folds. The esophagus carries food to the stomach and is not involved in sound production. So the structure that fits both functions and contains the vocal cords is the larynx.