You must analyze the viscous properties of blood. Its measured viscosity is $6.49 \mathrm{cP}$ at a shear rate of $10 \mathrm{~s}^{-1}$ and $4.66 \mathrm{cP}$ at a shear rate of $80 \mathrm{~s}^{-1}$.

(a) How would you describe these viscous properties?

(b) If the blood is subjected to a shear stress of $50 \mathrm{dyn} / \mathrm{cm}^{2}$, what would its viscosity be if it is described by (i) the power law model and (ii) the Bingham plastic model? Which answer do you think would be better, and why?