What is the primary function of the sinuses?

The primary function of the sinuses is to produce mucus and trap bacteria. Sinuses are air-filled spaces located in the skull that help maintain the moisture and humidity of the nasal passages, which is vital for effective breathing. The mucus produced by the sinuses has antimicrobial properties, helping to trap and eliminate dust, pathogens, and other foreign particles that may enter the respiratory system. This protective mechanism is essential in preventing infections and facilitating proper respiratory function. Additionally, the mucus helps to keep the nasal lining moist, which is crucial for effective air filtration.

Other functions of the sinuses may include warming and humidifying the air as it enters the respiratory tract, but the primary role of mucus production and trapping harmful materials is critical for health and respiratory efficiency. The modulation of voice and the facilitation of swallowing are also associated with the sinuses, but they are secondary to the primary role of filtering and protecting the respiratory system.