(a) Suppose a blood vessel’s radius is decreased to90.0% of its original value by plaque deposits and the bodycompensates by increasing the pressure difference along thevessel to keep the flow rate constant. By what factor must thepressure difference increase? (b) If turbulence is created bythe obstruction, what additional effect would it have on theflow rate?
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
(a) Suppose a blood vessel’s radius is decreased to
90.0% of its original value by plaque deposits and the body
compensates by increasing the pressure difference along the
vessel to keep the flow rate constant. By what factor must the
pressure difference increase? (b) If turbulence is created by
the obstruction, what additional effect would it have on the
flow rate?
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