PSIO 420 exam #4

PSIO 420 exam #4 - PSIO 420/520 practice problem set#4 The...

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Unformatted text preview: PSIO 420/520 practice problem set #4: The cardiovascular system and thermoregulation 1. How would the following conditions affect stroke volume? Justify each answer. Condition: Effect on SV: An increase in tidal volume. decrease increase no effect Why? ____________________________________________________________________________________ An increase in PNS activity. decrease increase no effect Why? ____________________________________________________________________________________ Moving from a supine to upright position. decrease increase no effect Why? ____________________________________________________________________________________ Dehydration. decrease increase no effect Why? ____________________________________________________________________________________ 2. Plot the change in stroke volume that you would expect to measure during a progressive intensity exercise test performed to exhaustion by an untrained person (include appropriate values and units). Then, explain the reason for the change that is observed as it relates to the three determinants of stroke volume. ____________________________________________ SV ____________________________________________ ____________________________________________ VO2 b. What three mechanisms facilitate an increase in venous return during progressively intense exercise?...
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PSIO 420 exam #4 - PSIO 420/520 practice problem set#4 The...

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