review 08 - My questions on the exam: 24 of 50 General 6...

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Unformatted text preview: My questions on the exam: 24 of 50 General 6 Problems 7 (Homework 5) Computer lab 6 (Homework 6) Animal lab 5 (Homework 6) Dont forget about calculations. Stroke volume, SVR, resistance, A-VO2 difference Stroke volume de pulse pressure F = P / R P = F x R MAP = CO x SVR CO = MAP / SVR: CO not determined by MAP or SVR CO = HR x SV R = P / F SVR = MAP / CO: SVR not determined by MAP or CO R and SVR are controlled by the radius of the arterioles R ~ 1/r 4 Changes in venous compliance Contraction of vascular smooth muscle in veins causes venous compliance to decrease . Relaxation of vascular smooth muscle in veins causes venous compliance to increase . Decrease in venous compliance will cause venous pressure to increase and increase preload on the heart. Increase in venous compliance will cause venous pressure to decrease and decrease preload on the heart. Strong sympathetic stimulation will cause venous compliance to decrease. Drugs that cause vasoconstriction may cause venous compliance to decrease. Drugs that cause vasodilation may cause venous compliance to increase. Systemic Vascular Resistance* Heart Rate* Cardiac Output Arterial Pressure Pressure Difference Tissue Blood Flow Resistance to Blood Flow Stroke Volume Central Venous Pressure- preload- afterload- contractility* *Cardiovascular Reflexes have an effect at these points- blood volume- gravity- skeletal muscle pump- respiratory pump- venous compliance- vessel radius (r 4 )- vessel length- blood viscosity- Intrinsic control Metabolic active hyperemia Myogenic autoregulation- Extrinsic control neural* humoral Systemic Vascular Resistance* Heart Rate* Cardiac Output Arterial Pressure Pressure Difference Tissue Blood Flow Resistance to Blood Flow Stroke Volume Central Venous Pressure- preload- afterload- contractility* *Cardiovascular Reflexes have an effect at these points- blood volume- gravity- skeletal muscle pump- respiratory pump- venous compliance- vessel radius (r 4 )- vessel length- blood viscosity- Intrinsic control Metabolic active hyperemia Myogenic autoregulation- Extrinsic control neural* humoral Intrinsic control of blood flow Ability of a tissue to control its own blood flow. Basal tone: partial constriction of arterioles at rest due to intrinsic mechanisms....
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review 08 - My questions on the exam: 24 of 50 General 6...

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