HPHY 371 Final Exam quizzes and solutions
Of the factors that can influence stroke volume, which do you think contributes to the rise in stroke volume during exercise? Increased afterload Increased contractility Increased heart rate All of the above - increased Contractility Based on the Krogh hydraulic model, which of the following would increase preload during exercise? Vasodilation of skin blood vessels Vasodilation of splanchnic blood vessels Vasodilation of skeletal muscle blood vessels None of the above - None of the above **vasoconstriction to non-active muscles is what increases preload during exercise If you are 20 years old, what is your estimated maximal heart rate? 180 200 220 240 - 200 **220-age=max HR Which of the following variables are NOT included within the terms of the Fick equation? Arterial O2 content Mixed venous O2 content Heart rate Arterial pressure - Arterial pressure
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