Vascular ultrasound exam 1 WITH CORRECT ANSWERS

Vascular ultrasound exam 1 WITH |\ |\ |\ |\ |\




CORRECT ANSWERS |\




Anatomy of Arterial wall - CORRECT ANSWERS ✔✔Tunica
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intima(blood flow |\




Tunitca media(muscular holds together)
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Tunica externa(aventitia)(extends&contracts)
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stoke volume - CORRECT ANSWERS ✔✔the amount of blood
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entering the aorta with each ventricular contraction
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Windkessel effect - CORRECT ANSWERS ✔✔The expansion and
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contraction of compliant vessels. In the aorta the vessel expands
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and increases the volume within it, then when the pressure is
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reduced, the vessel is able to contract to push the remaining
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blood forward. No backward flow is allowed due to valves.
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Blood flows - CORRECT ANSWERS ✔✔Laminar
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Disturbed
Turbulent
Plug


laminar flow - CORRECT ANSWERS ✔✔Parabolic
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Bullet
Layered

, Normal


turbulent blood flow - CORRECT ANSWERS ✔✔type of blood flow
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resulting in audible sound; defined by chaotic flow due to
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variations of pressure and velocity |\ |\ |\ |\




Bernoulli's Principle - CORRECT ANSWERS ✔✔as the velocity of a
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fluid increases, the pressure exerted by the fluid decreases
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Poiseville's Law - CORRECT ANSWERS ✔✔resistance to air flow
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(R) is proportional to diameter of a tube raised to the fourth
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power |\




R=d^4


Doppler angle - CORRECT ANSWERS ✔✔The angle between the
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sound beam and the flow direction 45-60
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spectral broadening - CORRECT ANSWERS ✔✔the filling of the
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spectral window |\




Circle of Willis - CORRECT ANSWERS ✔✔a circulatory anastomosis
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that supplies blood to the brain and surrounding structures
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What percent has circle of Willis? - CORRECT ANSWERS ✔✔50%
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How to open vessel - CORRECT ANSWERS ✔✔Rotating and angle
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