Biology for IGCSE & O level - Gas Exchange In Humans (Section 3 - No. 3)
What happens to the diaphragm during inhalation?
Relaxes and moves upwards
Contracts and moves upwards
Contracts and moves downwards
Relaxes and moves downwards
Explanation
During inhalation, the diaphragm contracts and moves downwards, increasing the volume of the chest cavity.
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