Find out information about sinuses present in skull, functions of skull and disorder ‘sinusitis’.

Sinuses are the hollow cavities present in the skull. They humidify the air we breathe. 

i. The four types of sinuses present in the skull:

Frontal sinuses: 

They are located above each eye. There are right and left frontal sinuses. 

Maxillary sinuses: 

They are the largest among all sinuses, located just behind the cheekbones near to upper jaws. 

Sphenoid sinuses: 

These are present just behind the nose. 

Ethmoid sinuses: 

These are present between the eyes. ii. 

Functions of skull:

Functions of skull: 

• It protects the brain. 
• It provides sockets for ear, nasal chamber and eyes. 
• Mandible bone of the skull helps in opening and closing of the mouth. 

iii. Sinusitis: 

It is the inflammation of tissue lining the sinuses. Healthy sinuses when get blocked with mucus and germs causing infection which may lead to sinusitis.