The major site of gas exchange in the lungs is/are the ____.
A)bronchi
B)bronchioles
C)larynx
D)alveoli
E)respiratory bronchioles

Question

The major site of gas exchange in the lungs is/are the ____. ​
A)bronchi
B)bronchioles
C)larynx
D)alveoli
E)respiratory bronchioles ​

Quizplus · Accepted Answer

The alveoli are tiny air sacs in the lungs where gas exchange occurs. Oxygen from inhaled air diffuses through the walls of the alveoli into the bloodstream, while carbon dioxide from the bloodstream diffuses into the alveoli to be exhaled out of the body. The bronchi, bronchioles, larynx, and respiratory bronchioles all play roles in conducting air to and from the alveoli, but they are not the site of gas exchange.

The Major Site of Gas Exchange in the Lungs Is/are