What is the role of sinuses in the human skull?

The role of the sinuses in the human skull is primarily associated with their contribution to resonance and the quality of sound produced during vocalization. Sinuses are air-filled cavities located within the bones of the skull that connect to the nasal passages. Their structure allows them to enhance the voice by improving resonance, which contributes to the richness and quality of sound.

Additionally, sinuses help to lighten the overall weight of the skull, provide insulation for sensitive structures within the skull, and play roles in mucous production and air humidification. While these aspects are important, the primary function of improving the quality of sound during voice production is a clear distinguishing feature of what sinuses contribute to our vocal capabilities.