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 increase by a factor of 16 ?

Question

Quizplus · Accepted Answer

[Chapter 3, II C, D]. A decrease in radius causes an increase in resistance, as described by the Poiseuille relationship (resistance is inversely proportional to $\mathrm{r}^{4}$ ). Thus, if radius decreases twofold, the resistance will increase by (2) ${ }^{4}$ or 16 -fold.

If an Artery Is Partially Occluded by an Embolism Such