5.What is a Sinus?

Sinus is the name given to the hollow structures located inside the bones around the nose. It is located on the cheeks, behind the eyes and nose, and opens into the nose through channels. The purpose of these structures is to heat, moisturize and filter the air in the nasal cavity. In order for the sinuses to function Decently, these channels that open into the nose must be able to provide air and secretion passage between the sinuses and the nasal cavity.