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ME 494 Quiz 2

QuestionAnswer
Three size classifications of blood vessels on the arteria side arteries, arterioles, capillaries,
Three size classifications of blood vessels on the venous side venules, veins, vena cava
Identify those vessels for which the pulsatile nature flow is significant pulsatile nature of blood flow is most significant in the aorta and larger arteries - it becomes less significant as blood travels into smaller vessels
Name the layers of a large artery from the lumen to the surrounding tissue tunica interna (intima) - innermost layer, lined w/ endothelial cells tunica media - middle layer tunica externa (adventitia) - outermost layer
What effect does the compliance of the aorta and large arteries have on the arterial pressure reduces fluctuations in arterial pressure by expanding during systole & recoiling during diastole - helping maintain continuous arterial pressure and flow
Describe the ramifications on the cardiovascular system of blood doping by transfusion of blood with high hematocrit higher hema. --> higher blood viscosity & higher viscosity --> greater vascular resistance - requires heart to work harder to maintain blood flow & increase pressure needed to circulate blood
Define hematocrit
Describe the major rheological change caused by increasing the hematocrit
How does the velocity and pressure change at an arterial stenosis
What are the two flow variables related by the Windkessel Model
What are the two system variables that characterize the system response to
Under what conditions can blood be treated as a Newtonian fluid?
Give three reasons why blood flow in arteries differs from Poiseuille flow
What is Murrays law and how is it expressed in an equation
What is the thought to cause the yield stress thats measured in blood
What causes there to be a yield stress in blood
Name the two significant factors in determining the yield stress in blood
For the Womersley number, describe the velocity profile for large values of alpha
What is the mechanism that causes the apparent viscosity to decrease for small blood vessels
Created by: mccurdyo
 

 



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