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.
