As air moves down through the tracheobronchial tree, the FIRST segment that will contain alveoli will be ________.
A) terminal bronchioles
B) alveolar duct
C) alveolar sac
D) bronchioles
E) respiratory bronchioles

Question

Quizplus · Accepted Answer

The first segment of the tracheobronchial tree that contains alveoli is the respiratory bronchioles. This is where gas exchange begins to occur, distinguishing them from the conducting airways that precede them.

As Air Moves Down Through the Tracheobronchial Tree, the FIRST