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Gas Exchange (Lung Structure (Trachea, Bronchi, Bronchioles, Alveoli,…
Gas Exchange
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Monitoring Ventilation
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Monitored at different intensities of exercise:
- Rest
- Mild
- Vigorous
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Alveoli Structure
Pneumocytes
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Type 2:
- Rounded
- Secrete Sufractant
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Ventilation
Inspiration:
- External intercostals muscles contract
- Ribs move upward
- Diaphragm contracts
- Air moves into lungs
Expiration:
- Internal intercostal muscles contract
- Ribs are pulled downwards
- Diaphragm relaxes
- Volume of lung cavity reduces
- Air moves out of the lungs
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