Advanced Solutions - Advanced Information

The sinuses are hollow air spaces inside the bones of your face and skull. There are several groups of them. Here is a side view of the main computer model. The forehead sinus (frontal sinus) is shown in black check, the cheek sinus (maxillary sinus) in red, the front ethmoid sinuses in green, the back ethmoid sinuses in purple, and the deep sinus behind the eyes (sphenoid sinus) in yellow.