The smallest conducting passageways of the lungs are known as ________.
A) main (primary) bronchi
B) alveoli
C) bronchioles
D) alveolar ducts

Question

Quizplus · Accepted Answer

Bronchioles are the smallest conducting passageways of the lungs. Alveoli are air sacs where gas exchange occurs, and alveolar ducts are the connections between bronchioles and alveoli. Main (primary) bronchi are larger airways that branch off the trachea.

The Smallest Conducting Passageways of the Lungs Are Known as ________