Question

question 93 (0.5 points)
which structure is not located in the respiratory zone of the lungs?
terminal bronchiole
alveoli
primary bronchus
alveolar duct

Explanation:

The respiratory zone of the lungs is where gas exchange occurs, including structures like alveoli, alveolar ducts, and terminal bronchioles (which are part of the respiratory bronchioles - alveolar duct - alveoli pathway). The primary bronchus is part of the conducting zone, which is for air conduction (not gas exchange) and is located in the larger airways before the respiratory zone.

Answer:

Primary Bronchus