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