Nose- the organ through which the air enters and is filtered.
Nasal passages- serve as the channel for airflow through the nose in which the air is warmed and moistened.
Trachea- enables air to get to the lungs.
Bronchi- enable air to pass through.
Bronchioles- allow for the exchange of oxygen and carbon dioxide.
Alveoli- main organ of respiration.
--Mizu
