respiratory system

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Physical Science

GCSE Physical Education

Last updated 7:00 PM on 1/2/26
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7 Terms

1
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intercostals contract- ribs rise- diaphragm flattens- chest cavity gets bigger- volume and pressure decreases- air drawn in
inhalation
2
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intercostal muscles relax- ribs lower- diaphragm relaxes becomes dome shape- chest cavity decreases- pressure increases- air leaves
exhalation
3
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vital capacity
largest volume of air that can be inhaled or exhaled
4
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tidal volume during exercise
increases
5
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inspiratory reserve volume
decreases
6
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expiratory reserve volume
decreases
7
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residual volume
no change