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Vascular Ultrasound Hemodynamics Questions with Correct Answers.
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Vascular Ultrasound Hemodynamics Questions with Correct Answers.
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Vascular Ultrasound Hemodynamics Questions withCorrect Answers
Name the 3 vessel layers Correct Answer-tunica interna/intima,
tunica media,
tunica externs/adventitia
laminar flow has what kind of spectrum velocities? Correct Answer-
narrow
laminar flow occurs when flow streams are Correct Answer-aligned and
parallel (same direction)
laminar flow is also known as Correct Answer-smooth flow
what are the 3 forms of laminar flow? Correct Answer-plug, parabolic,
disturbed
What is plug flow? Correct Answer-occurs when all of the layers and
blood cells travel at the same velocity
plug flow is found in Correct Answer-larger vessels and usually at the
entrance of a vessel
what shape is parabolic flow? Correct Answer-bullet shaped
, parabolic flow is usually found in Correct Answer-smaller vessels
where is velocity highest in the vessel? Correct Answer-center of the
lumen
what is disturbed flow? Correct Answer-flow is altered from a straight
line but still going forward
in disturbed flow, cells are moving in Correct Answer-different
directions
Disturbed flow occurs in Correct Answer-stenosis and bifurcations
Steady flow occurs when Correct Answer-a fluid moves at a constant
speed or velocity
steady flow is present in the Correct Answer-venous circulation when
breathing stops for a moment
volume flow is related to the Correct Answer-pressure difference and
flow resistance
pulsatile flow occurs when Correct Answer-blood moves with a variable
velocity
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