Module 2 Flashcards
Which of the following vessels has the lowest resistance
Inferior vena cava
Where is the highest vascular pressure found in the body
Heart
Which vessel would have a high resistant profile
Common femoral artery
Vasoconstriction and dilation typically occur in which vessels
Capillaries
Which of the following is a true statement
Vasodilation results from inflammation
Blood will move from the left ventricle of the heart into the aorta when:
The pressure in the left ventricle is higher then the pressure in the aorta
Which of the following causes the biggest change in blood velocity in a vessel
Change in the radius of a vessel
Hydrostatic pressure in a supine patient is approximately
15 mmHg
Which of the following is not considered a component of the calf muscle group
Phasic blood flow
The resistance of movement of one layer of blood against another layer or the vessel wall is known as
Friction
In a stenotic vessel, where is the kinetic energy the greatest
At the level of the stenosis
Turbulent flow is seen in what area of a stenotic vessel
Just distal to the site of the stenotic lesion
A critical stenosis is determined by a diameter reduction of 50%. In a circumferential stenosis this corresponds to a ___ area reduction.
75%
What happens to pressure at the level of a hemodynamically significant stenosis.
It decreases.
Which is the following best describes the effects of exercise on blood flow in a non-diseased vessel
Exercise causes arteriole vasodilation
As intraluminal pressure increases, what happens to transmural pressure
It inc and the shape of the vein becomes more circular
Upon inspiration, what occurs in the upper extremity veins
Intrathoracic pressure is decreased causing an increase in flow
Venous valves
Will decrease venous pressure, if conpetent
Which of the following is the least likely cause of edema in the lower extremities
Arterial occlusion
Which of the following is not characteristic of a venous Doppler flow profile
Pulsatile
