When an artery gets a constricted region due to plaque, how does the pressure in

Question

When an artery gets a constricted region due to plaque, how does the pressure in the region compare to the pressure in an unconstricted region adjacent? Since this is a closed system, the pressure is the same in both regions. in the constricted region the blood moves at a higher speed than in the unconstricted region resulting in an increased pressure In the constricted region the blood moves at a higher speed than in te unconstricted regiorn resulting in a decreased pressur in the constricted region the blood moves at a lower speed than in the unconstricted region resulting in an increased pressure

Explanation / Answer

Otion 3 is the correct answer.

using continuty equation

A1*v1 = A2*v2

if A2 < A1

v2 > v1

so, blood flows with lerger speed.

from Bernoullis equation

P1 + (1/2)*rho*v1^2 = P2 + (1/2)*rho*v2^2

here v2 > v1

so,

P2 < P1

so, pressure decreases.

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