Tonsillitis. inflammation or swelling of the tonsils. The parts of the respiratory system that are affected are:. Adenoids - sits in the back of the nasal cavity and are above the roof of the mouth. lingual tonsils- located on the dorsal surface at the base of the tongue
inflammation or swelling of the tonsils.
Tonsillitis is caused by a virus or bacteria and can pass through the air when an infected person breathes, coughs, or sneezes.