They remain connected to the nasal cavity via narrow ostia with a lumen diameter of 1 to 3 mm. The sinuses are lined with mucoperiosteum, which is thinner and less richly supplied with blood ...

"Sinus passages can become inflamed from an infection or allergies leading to the trapping air, fluid, and mucus inside — this creates pressure that leads to pain in the forehead, cheeks ...

Several studies have investigated the anatomy of the olfactory fossa using ... procedure that uses an endoscope to access the nasal cavity and sinuses to treat various conditions.

Nasal irrigation is the cleansing of the nasal cavity with sterile salt water to flush out excess mucus or debris from the sinuses and nose, such as with the use of a neti pot. "People are more ...