What happens to the diaphragm when we breathe in?
When we breathe in, the diaphragm contracts and moves down.
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What happens to the ribcage when we breathe in?
When we breathe in, the ribcage moves up and out.
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Explain the changes that happen in the chest that cause us to breathe out.
When we breathe out:
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In the bell jar model, what does pulling down the rubber sheet represent?
In the bell jar model, pulling down the rubber sheet represents the diaphragm moving down and contracting.
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In the bell jar model, explain why the balloons inflate when the rubber sheet is pulled down.
When the rubber sheet is pulled down:
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What is lung volume?
Lung volume is the amount of air we can breathe in or out in one go.
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What is a spirometer used for?
A spirometer is a tool used to measure lung volume by recording how much air you breathe in and out.
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