A well-trained athlete has prepared to run in the Boston marathon. Our purpose is to study how this athlete's cardiovascular system adapts to the strenuous demands of the race
Assume that just before the athlete runs, measurements of heart rate (60 beats/min), blood pressure (110/80 mm Hg), and cardiac output (4.2 L/min) are recorded.
What is this athlete's pulse pressure?
A. 100 mm Hg
B. 90 mm Hg
C. 80 mm Hg
D. 60 mm Hg
E. 30 mm Hg
ANS: E
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Which of the following motions occurs primarily in the sagittal plane?
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