The actual sites of gas exchange within the lungs include
A) bronchioles.
B) alveolar ducts.
C) pleural spaces.
D) alveoli.
E) capillary beds.

Question

Quizplus · Accepted Answer

Alveoli are the small air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place. They are the primary site for gas exchange, allowing oxygen to enter the bloodstream and carbon dioxide to be expelled from the body.

The Actual Sites of Gas Exchange Within the Lungs Include