Determinants
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| What is the equation for Blood Flow? | BF = MAP - Venous Pressure/PR
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| What is Perfusion Pressure? | the DIFFERENCE in Perssure
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| What determines Perfusion Pressure? | mainly CHANGES in the MAP
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| What is the definition of PR? | FRICTION of Blood against Aterioles
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| What 2 factors effect PR? | Blood Viscosity, Vasomotor Tone
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| What 2 factors determine Vasomotor Tone? | Sympathetic Action, Hormones on Adrenergic Receptors
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| What would be the result of INCREASED Sympathetic Activity on ß2 Receptors? | DILATION of Coronary & Skeletal Muscle ARTERIOLES
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| What would be the result of DECREASED Sympathetic Activity on ß2 Receptors? | NORMAL Vasomotor Tone on Coronary & Skeletal Muscle Aterioles
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| What would be the result of INCREASED Sympathetic Activity on Alpha Receptors? | CONSTRICTION of GI Tract, Kidneys, & Skin Arterioles
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| What would be the result of DECREASED Sympathetic Activity on Alpha Receptors? | DILATION of GI Tract, Kidneys, & Skin Arterioles
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| Where are ß1 Receptors located? | only in the Heart, only for Parasympathetic
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| What would be the result of having all dilated Arterioles? | Anagalactic Shock = faint
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| What is the significance of Vasoconstriction? | Thermoregulatiion, Venous return
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| An increase in MAP would have what effect on BF? | INCREASE blood flow
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| An increase in PR would have what effect on BF? | DECREASE in blood flow
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