Which structure contains the vocal cords?

The structure that contains the vocal cords is the larynx. The larynx, often referred to as the voice box, is located in the upper part of the respiratory tract, below the pharynx and above the trachea. It plays a crucial role in phonation, which is the production of sound. The vocal cords, or vocal folds, are located within the larynx and vibrate to produce sound when air is expelled from the lungs.

In contrast, the pharynx is involved in the passage of air and food, but it does not contain vocal cords. The trachea is the windpipe that conducts air towards the lungs but lacks the structures responsible for sound production. The bronchi are the branches of the trachea that lead into the lungs and do not have any vocal structures either. Therefore, it is the larynx that is specifically adapted for the function of voice production, making it the correct answer.