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Miguel Is a 25-Year-Old Jogger with a Target Heart Rate

Question 190

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Miguel is a 25-year-old jogger with a target heart rate of 125 bpm.His resting pulse is 70 bpm.His blood volume is approximately 6.8 liters.At rest, his cardiac output is 6.3 liters/min.
A.What must his stroke volume be?
B.What might his EDV and ESV be?
C.During his workout, his heart rate increases to 125 bpm and his cardiac output to 12,500 mL/min.Do his SV, EDV, and ESV change with exercise?

Correct Answer:

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A.90 mL CO = SV * HR; SV = CO/HR = 6.3 L...

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