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15 August, 20:45

Which of these processes occurs when you inhale?

A. The diaphragm expands and thoracic volume decreases.

B. The diaphragm contracts and thoracic volume decreases.

C. The diaphragm expands and thoracic volume increases.

D. The diaphragm contracts and thoracic volume increases.

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  1. 15 August, 20:58
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    The correct answer is D. When you inhale the diaphragm contracts or tightens and moves downward. This increases the thoracic volume or the space in your chest cavity, giving your lungs room to expand as they fill up with air.
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