The forehead sinus (frontal sinus) has the longest drainage pathway of any sinus. Even so, it gets infected less often than the cheek sinus or the front ethmoid sinuses. Its drainage path passes through the front ethmoid cells, which can partly block the flow.

Introduction 1
The Lab
Sinuses Side
Sinuses Front
Mid-Sagittal
Septum
Deviated Septum
Deviated Septum
Inferior Turbinate
Inferior Turbinate
Middle Turbinate
Concha Bullosa
Middle Turbinate
Middle Turbinate
Airflow
Airflow
Frontal
Frontal
Drainage
Drainage
Drainage
Drainage
Sphenoid
Sphenoid
Maxillary
Maxillary
Maxillary
Mucous Flow
Ostio-Meatal
Ostio-Meatal
Polyps
Polyps
Windows
Windows
Endoscopic
Endoscopic
Turbinate Reduction
Turbinate Reduction
Cool Picture