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BTEC Level 3 - Unit 1 - Responses and Adaptations (Respiratory) [Graded A+]
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October 2023

2023/2024

A+
Increase in tidal volume - Answers-At rest, our tidal volume (air taken in per breath) is around 500ml but this increases during exercise. Increasing TV & breathing rate means we can increase the volume of air moving into and out of the lungs from 6 litres at rest to 60 litres during exercise. Increased strength of the respiratory muscles - Answers-Through increased use, the diaphragm and the external intercostal muscles will become stronger. This means they will be able to contract more forc...
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