Answer:
Nostrils, nasal cavities, pharynx, larynx, trachea, bronchi, bronchioles.
Explanation:
Air enters through nostrils to nasal cavities filtering the air, passes through pharynx (filtering out germs), goes to larynx and then to trachea. Then goes to left or right bronchi taking to each lung, which is further divided into bronchioles having air sacs where exchange of air takes place.
