What are the sinuses and how do they work?
The purpose of the sinus cavities is not completely known. Some theories include:
- Add to the quality of the voice by acting as sound chambers
- Humidify and warm air for the lungs
- Increase exposure of smell receptors located in the top surface of the nose
- Absorb any shock from injury to the head
- Secrete mucus to moisten the nose and bacteria destroying proteins to cleanse the nose
- Provide immunity with antibodies
- Help facial growth
- Lighten the bones of the skull
The sinuses consist of 4 paired air filled chambers hollowed out in the skull and connected to the nose by small openings called ostia. The sinus cavities are named by their location:
maxillary,
ethmoid,
frontal and
sphenoid sinuses.
This section explains the anatomy of the sinuses and the mechanism by which the sinuses work.
Nasal Turbinates
Respiratory Mucous Membrane
Mucociliary Clearance
