Question
How does nasal cavity help in respiration?
Solution
Functions of Nasal Cavity
(i) Nasal cavity has external nostrils through which air is drawn into nasal cavity.
(ii) The nasal cavity is separated from oral cavity by a bony palate. So that air can breathe in even while we eat.
(iii) In nasal cavity the air is warmed to match the body temperature, moistened to avoid friction, and dust particles are removed by mucous secreted by mucous glands.
(iv) The hairs present in the nasal cavity filters the air .
(v) It provides passage to air from external nostrils to pharynx through internal nostrils.
