PSIO 420 exam #3

PSIO 420 exam #3 - PSIO 420/520 practice problem set #3:...

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PSIO 420/520 practice problem set #3: The respiratory system 1. a. Calculate alveolar ventilation (VA) given the following data: VD = 200 ml/breath VT = 2.5 L/breath FB = 50 b/min b. During exercise, large tidal volumes are achieved despite a much lower time available for each breath (since FB has increased). How is this accomplished? ____________________________________________________________________________________ ____________________________________________________________________________________ 2. The following figures illustrate the relationship between tidal volume and breathing frequency during a progressive intensity exercise test. A B 10% 100% %VO2max 10% 100% a. Which figure represents tidal volume? A B b. At rest, increasing tidal volume increases the quantity of ___________________ (elastic / resistive) work done by the respiratory muscles. c. At rest, increasing breathing frequency will increase the quantity of ___________________ (elastic / resistive) work done by the respiratory muscles. d. Given what you know about respiratory muscle work, briefly explain why tidal volume and breathing frequency change the way they do during exercise above 50% VO2max. _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ 3.
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This note was uploaded on 05/13/2008 for the course PSIO 420 taught by Professor Keen during the Spring '08 term at Arizona.

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PSIO 420 exam #3 - PSIO 420/520 practice problem set #3:...

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