RIU 436 Lecture Notes - Lecture 6: Dynamic Pressure, Capillary, Flow VelocityExam
DepartmentRadiation and Imaging - Ultrasound
Course CodeRIU 436
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Vascular Quiz 1
1. Which of the following equations demonstrates an inverse
relationship between pressure (p) and velocity (v), assuming
flow (Q) remains constant?
2. What vessel type is responsible for controlling resistance in
the distal vascular beds?
3. What is the primary source of pressure which creates
forward flow of blood through the arterial circulation?
a. Dynamic pressure
4. Laminar flow through a healthy vessel can be accurately
described as which of the following?
a. Blood cells flowing parallel to each other, with highest
speeds in the center of the vessel
5. Blood flow changing direction as an artery branches or
bifurcates will lead to flow turbulence and energy loss. The
principle underlying these properties and patterns is:
6. What mechanism does a body use to circumvent a severe
narrowing or obstruction in the arterial flow of the body?
a. Collateral vessels
7. What is the main reason that blood flow velocity drops as it
moves distally in the body?
a. Increased total cross-sectional area
8. What mechanism uses arterial wall elasticity to keep blood
moving forward in the arteries during ventricular diastole?
(Hint: it converts the pulsatile flow from the heart to steady
flow in the capillary bed)
a. Hydraulic filter
9. Which element of an arterial waveform is created by the
acceleration of blood flow during ventricular systole?
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10. When an arteriole bed dilates, this will cause an increase in
which of the following elements of a waveform?
a. Diastolic flow
Unit 1 Application Based Test
1. The following spectral Doppler tracing is taken from the
peroneal artery of a healthy, 45 year-old man. Which
components confirm that he has a healthy arterial wall?
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