As Air is Inhaled, Which of These Four Structures Is

Question

As air is inhaled, which of these four structures is the last to be encountered?
A) larynx
B) trachea
C) bronchiole
D) bronchi

Accepted Answer

Air enters the body through the nasal cavity or mouth and passes through the pharynx, then the larynx, and then the trachea. After the trachea, it enters the bronchi, which divide into smaller bronchioles. Therefore, the bronchioles are the last structures encountered before air reaches the alveoli for gas exchange.