What is the primary function of the sinuses?

The primary function of the sinuses is to enhance voice resonance. The sinus cavities, which are located within the skull, create a system of air-filled spaces that contribute to the quality of sound produced during speech. When we speak, the vibrations generated by our voice resonate in these cavities, helping to amplify and enrich our vocal tone. This resonance can affect the clarity and depth of sound, making it an essential aspect of vocalization.

While other functions may be associated with the sinuses, such as assisting in filtering and humidifying the air we breathe, their role in voice resonance is particularly significant. Options suggesting support for teeth structure or airflow regulation do not accurately capture the primary role of the sinuses in relation to vocal function.