Biology for IGCSE & O level - Gas Exchange In Humans (Section 1 - No. 1)
Why is the surface area of the lungs so large?
To accommodate the large volume of air that is inhaled.
To allow for efficient gas exchange.
To prevent the lungs from collapsing.
To increase the space for the bronchioles.
Explanation
A large surface area maximizes the area available for oxygen and carbon dioxide to diffuse between the alveoli and the blood.
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