Showing results by author "Stefan Lawyer"

In order for you to understand all the information provided in this book, first you need to know what exactly are the sinuses and how do they get infected. The sinuses are cavities in the bones that form the face. They have different sizes, the largest ones are about one inch in diameter, and they are connected through very narrow channels. We have four types of sinus cavities: Frontal, Sphenoid, Ethmoid and Maxillary sinuses.