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yuradex [85]
3 years ago
13

Which muscles, when contracted, would increase the volume of air in the thoracic cavity?

Biology
1 answer:
alexandr1967 [171]3 years ago
6 0
Contraction of both the diaphragm<span> (the </span>diaphragm<span> flattens) and the external </span>intercostals<span> (pulls the ribs up and out) will increase the volume of the thoracic cavity. This will cause air to move into the lungs (inspiration).</span>
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