C34 Marking Scheme Respiratory System Mechanics.doc

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Department
Biological Sciences
Course Code
BIOC34H3
Professor
Stephen Reid

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Description
Respiratory System Mechanics Activity 1: Measuring Respiratory Volumes 7. Does ERV include TV? No (0.5 marks). It is the volume that can be exhaled after TV (1 mark). Activity 2: Examining the Effect of Changing Airway Resistance on Respiratory Volumes 7. There is a decrease in FEV d1e to increased resistance with a decreasing airway radius (1 mark). Activity 3: Examining the Effects of Surfactant Premature infancies have little or no surfactant (0.5 marks). This leads to alveolar collapse or low compliance. Therefore there needs to be an increased effort to breathe or a decrease in surface tension (1 mark) Activity 4: Investigating Intrapleural Pressure 8. Expl
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