What Does It Mean If Paranasal Sinuses Are Aerated?
What Does It Mean If Paranasal Sinuses Are Aerated? Sinus Development. The paranasal sinuses are small, aerated areas within the bony skull that appear to provide several functions: They lighten the weight of the skull, produce a portion of upper airway respiratory mucus, and help with vocal resonance. When are sinuses aerated? At birth only