As heart rate increases during exercise, time in diastole decreases. Assuming th
ID: 3472917 • Letter: A
Question
As heart rate increases during exercise, time in diastole decreases. Assuming that the driving pressure for blood flow through the heart vessels does not increase, how is the increased oxygen demand of the left ventricle met during cardiovascular exercise?
As heart rate increases during exercise, time in diastole decreases. Assuming that the driving pressure for blood flow through the heart vessels does not increase, how is the increased oxygen demand of the left ventricle met during cardiovascular exercise? through a relatively equal contribution from oxygen extraction and decreasing vessel resistance primarily through increased diffusion of oxygen from the blood in the left ventricular chamber primarily through decreasing resistance via dilation of heart vessels primarily through increased oxygen extraction from the blood O OExplanation / Answer
The increased oxygen demand of left ventricle is,
a.through a relatively equal contribution from oxygen extraction and decreasing vessel resistance.
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