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While exercising, the following physiological changes occur for a certain person. His systolic pressure increases by 46 %. His blood vessels dilate, causing the average diameter to increase by 34 %. The viscosity of his blood decreases by 5.1 % due to increased body temperature.
A/ By what factor does blood flow increase as a result of these changes?
B/ Which change has the strongest effect on blood flow?
1. Pressure
2. Dilation
3. Viscosity
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