Problem

Human circulatory system and circuit breakers: Arteriosclerosis Reca...

Human circulatory system and circuit breakers:

Arteriosclerosis Recall that the resistance of a vessel to fluid flow is inversely proportional to the radius of the vessel to the fourth power. (a) By what factor would a resistor representing the aorta shown in Figure P16.58 change if the aorta radius of a person was 0.20 times what it had been years earlier? (b) If the pressure drop across the aorta had originally been 5 mm Hg with normal blood flow, what would the pressure drop now be in order to have the same flow rate? Note that the blood pressure will have to increase to maintain the same flow rate.

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