65.  The blood speed in a normal segment of a horizontal artery is 0.11 m/s. An abnormal segment of the artery is narrowed down by an arteriosclerotic plaque to one-fourth the normal cross-sectional area. What is the difference in blood pressures between the normal and constricted segments of the artery?

 

Assume that blood is incompressible then continuity equation

 

Reduces to

Bernoulli’s Principle  is

 

 

From continuity we can solve for the abnormal speed

 

Using the condition that

 

 

So put this into pressure difference

 

 

 

 

 

 

 

 

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This page last updated on January 11, 2020