View a list of ZIP codes in Creswell, OR; Creswell, OR ZIP Code Boundaries; Download Creswell, OR ZIP Code Database
Paranasal sinuses are filled with air Their function is to-humidify and warm the inspired air,provide resonance to voice,lighten the skull bones, andact as thermal insulatorsâ¦ to protect orbit and cranium from variation in temperature of air in our nose Paranasal sinuses are air containing cavities (hollow spaces) in certain bones of skull.
For example, the antrum of the stomach (gastric antrum) is a portion before the outlet, which is lined by mucosa and does not produce acid. The paranasal sinuses can be referred to as the frontal antrum, ethmoid antrum, and maxillary antrum.