Question

16 where does gas exchange between inspired air and blood occur? multiple choice terminal bronchioles primary bronchi trachea alveoli

Explanation:

The alveoli are tiny air - sacs in the lungs. They have a large surface area and thin walls. Oxygen from inspired air diffuses across the alveolar walls into the blood, and carbon dioxide diffuses from the blood into the alveoli to be exhaled. Terminal bronchioles are part of the conducting zone (not for gas exchange), primary bronchi are also in the conducting zone, and the trachea is just a passageway for air.

Answer:

Alveoli