If an artery is partially occluded by an embolism such that its radius becomes one-half the preocclusion value, which of the following parameters will decrease by a factor of 16 ?

Question

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[Chapter 3, II C, D]. Blood flow through the artery is proportional to the pressure difference and inversely proportional to the resistance $(\mathrm{Q}=\Delta \mathrm{P} / \mathrm{R})$. Because resistance increased 16 -fold when the radius decreased twofold, blood flow must decrease 16 -fold.

If an Artery Is Partially Occluded by an Embolism Such