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Laminar Flow
Streamlined
Outer layer - slowest
Turbulent Flow - Crosswise Currents Due to
Sharp turn
Rough surface
Valves
3 Factors of Resistance
Vessel length - DP
Viscosity - DP
Vessel diameter - IP
Rate of Blood Flow
Volume that passes specific point per unit time
Poiseuille’s Law
Combine flow + resistance
Blood Pressure - What + Measurement
Force blood exerts on walls
mmHg
3 Local Controls of Blood Flow
Local metabolic
Vasoactive substances
Myogenic
Local Metabolic - Increase Metabolism Increase Vasodilation
Increase CO2 + temp + nitric oxide
Decrease O2
Myogenic Control
Increase stretch - vasoconstriction
Decrease stretch - vasodilation
Extrinsic Control - 2
Nervous
Hormonal