What Is a Sinus Infection?
Reviewed: Dr. Gromatzky
1. Sinuses
Sinuses are cavities that are located in the skull. They are located in the cheekbones and in the foreheads. There are 4 types of sinus, which are the maxillary sinuses, ethmoid sinuses, a frontal sinus, and sphenoid sinuses. There is still some debate over what exactly they are for, but we do know that they produce a mucus (snot) that that helps to protect us against pathogens and dirt particles from being inhaled into the lungs.
Other likely uses are that they help to make our skulls lighter that than they otherwise would be, while it is also thought that they can help to enhance our voices.
