P5erferricarockett P5erferricarockett

19-03-2017
Biology

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

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volpina volpina

19-03-2017

Contraction of both the diaphragm (the diaphragm flattens) and the external intercostals (pulls the ribs up and out) will increase the volume of the thoracic cavity. This will cause air to move into the lungs (inspiration).

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