The paranasal sinuses are air filled extensions of the respiratory part of the nasal cavity there are four paired sinuses named according to the bone they are . The paired air filled cavities in the bones of the face lined by mucous membrane continuous with that of the nasal cavity these sinuses are the frontal . Paranasal sinus any one of the air cavities in various bones around the nose such as the frontal sinus in the frontal bone lying deep to the medial part . Conventional plain film radiography is no longer viewed as the primary diagnostic test for imaging of the paranasal sinuses it can be helpful however in
How it works:
1. Register Trial Account.
2. Download The Books as you like ( Personal use )