Biology for IGCSE & O level - Gas Exchange In Humans (Section 5 - No. 20)
What is the role of the intercostal muscles during breathing?
They control the movement of the diaphragm.
They move the rib cage, changing the volume of the chest cavity.
They facilitate the exchange of gases in the alveoli.
They transport oxygen to the muscles.
Explanation
The intercostal muscles, located between the ribs, contract and relax to raise and lower the rib cage, influencing chest cavity volume.
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