Biology for IGCSE & O level - Gas Exchange In Humans (Section 5 - No. 4)
What happens to the volume of lungs during exhalation?
The volume increases.
The volume decreases.
The volume stays the same.
The volume is not dependent on exhalation
Explanation
As the muscles of the diaphragm and intercostal muscles relax, the lungs return to their normal shape and volume, which has been decreased.
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