Why do we have sinuses?

Good question!  There is no known function of the sinuses although there are several theories.  One theory is that they make the skull lighter.  Another is that they function as an "airbag" for your brain. 

 

On the other hand, the nose has several known functions.  It serves as a source of humidification and warming for the air you breathe.  It also has a role in fighting infection.

* Note: The information contained in these pages is for educational purposes only. It should not be construed as individualized diagnostic and treatment advice.