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← ScienceWhich outcome occurs when a blood vessel undergoes stenosis?
A)Elevated blood flow velocity locally✓
B)Decreased shear stress at stenosis
C)Reduced overall arterial blood volume
D)Lowered distal blood pressure chronically
💡 Explanation
The local blood flow velocity increases because the *continuity equation* dictates that volumetric flow rate remains constant through narrowing; therefore, velocity must increase at stenosis, rather than decreases in flow or pressure.
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