Biology for IGCSE & O level - Gas Exchange In Humans (Section 5 - No. 16)
What is the primary function of the alveoli in the lungs?
To filter air pollutants
To facilitate gas exchange
To warm and humidify inhaled air
To transport oxygen to the brain
Explanation
Alveoli are the primary sites where oxygen and carbon dioxide are exchanged between the air and the bloodstream.
Comments (0)
