# Poiseuille's Equation And Describe The Effect On Blood Flow

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2. Physiology
Q=(P1 - P2)/ R
Q= flow
The amount of a liquid moving past a point in a given amount of time.
P=Pressure (P1-P2)
The amount of force placed on an artery at any given point in time.
R= resistance
Is the force that must be overcome for flow to occur.
Describe the basic flow equation and resistance equation as they relate to vascular flow.
b. Define Poiseuille’s Equation, and describe the effect on blood flow of a change in each variable.

Poiseuille's equation states that the velocity of the steady flow of a fluid through a narrow tube varies directly as the pressure and the fourth power of the radius of the tube and inversely as the length of the tube and the coefficient of viscosity.
The Pressure Gradient (∆P) : The difference
Re increases as velocity increases and viscosity increases. The higher the Reynold's number the likelihood of turbulence increases.
d. Define Reynolds’s equation, describing the factors that contribute to the likelihood of turbulent flow.

e. Describe the types of energy manifested in the circulatory system, and describe normal and abnormal causes of energy loss in arterial flow.

f. Describe and define the arterial energy wave and the effects of reflection and summing of these waves on blood pressure and pulsatility.
g. Describe and define local and general control of blood flow, vascular resistance, and blood pressure.
h. Describe and define types of arterial flow profiles, including where and when they occur.
Laminar flow:
Laminar flow is normal flow, the faster flow traveling through the vessel is in the center and the slower flow is closer to the vessel wall. This is due to wall drag.
Blunt flow ( plug