Frontal Sinuses.....
Sinus
No, they are not.
air pockets
sinuses.
Sinuses are air filled cavities that surround the nasal cavity. They clean the air that is breathed in by the nose.
SINUSES
The medical term is "paranasal sinuses." These are air-filled cavities located within the bones surrounding the nasal cavity. They are important for natural drainage and humidifying the air we breathe.
there are five cavities in the average number of cavities in your skull
three
They are carbonate deposits formed by dripping water in air-filled cavities.
A tooth can have a cavity or many cavities. Teeth will have cavities. A better way to say it may be 'The dentist filled the cavities in her teeth' rather than trying to say 'The dentist filled the teeth's cavities.'
The sinuses are mucous membrane-lined cavities in some of the skull bones surrounding the nose. They help make the skull lighter.
The cranial cavity is the primary cavity of the skull; it contains the brain. In addition, the skull has four other pairs of cavities called sinuses. They are the frontal sinuses, maxillary sinuses, sphenoid sinuses, and ethmoid sinuses.