What Route Does Air Follow to the Human Lungs as It

Question

What route does air follow to the human lungs as it is inhaled?
A) nasal cavity, trachea, larynx, bronchiole, alveolus
B) nasal cavity, larynx, bronchiole, trachea, alveolus
C) nasal cavity, bronchiole, larynx, trachea, alveolus
D) nasal cavity, larynx, trachea, bronchiole, alveolus

Accepted Answer

Air enters the body through the nasal cavity or mouth, then passes through the larynx (voice box) and enters the trachea (windpipe). From there, it branches into two bronchi, each of which leads to a lung. Inside the lung, the bronchi divide into smaller branches called bronchioles, which eventually terminate in tiny air sacs called alveoli where gas exchange occurs. Therefore, the correct route of air is nasal cavity, larynx, trachea, bronchiole, alveolus, which is described in option D.