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Which consequence results when blood viscosity increases significantly?

A)Increased vessel wall shear stress
B)Enhanced oxygen transport efficiency
C)Reduced risk of deep vein thrombosis
D)Decreased arterial blood pressure

💡 Explanation

Increased viscosity elevates resistance to flow, thus increasing stress on vessel walls due to internal friction; this is described by Poiseuille's Law. Therefore, shear stress increases rather than diminishes, because increased viscosity requires elevated pressures to maintain flow.

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