Vascular ultrasound exam 1 UPDATED
ACTUAL QUESTIONS AND CORRECT
ANSWERS
Anatomy of Arterial wall - Correct answers✔✔Tunica intima(blood flow
Tunitca media(muscular holds together)
Tunica externa(aventitia)(extends&contracts)
stoke volume - Correct answers✔✔the amount of blood entering the aorta with each ventricular
contraction
Windkessel effect - Correct answers✔✔The expansion and contraction of compliant vessels. In
the aorta the vessel expands and increases the volume within it, then when the pressure is
reduced, the vessel is able to contract to push the remaining blood forward. No backward flow is
allowed due to valves.
Blood flows - Correct answers✔✔Laminar
Disturbed
Turbulent
Plug
laminar flow - Correct answers✔✔Parabolic
Bullet
Layered
Normal
, turbulent blood flow - Correct answers✔✔type of blood flow resulting in audible sound; defined
by chaotic flow due to variations of pressure and velocity
Bernoulli's Principle - Correct answers✔✔as the velocity of a fluid increases, the pressure
exerted by the fluid decreases
Poiseville's Law - Correct answers✔✔resistance to air flow (R) is proportional to diameter of a
tube raised to the fourth power
R=d^4
Doppler angle - Correct answers✔✔The angle between the sound beam and the flow direction
45-60
spectral broadening - Correct answers✔✔the filling of the spectral window
Circle of Willis - Correct answers✔✔a circulatory anastomosis that supplies blood to the brain
and surrounding structures
What percent has circle of Willis? - Correct answers✔✔50%
How to open vessel - Correct answers✔✔Rotating and angle
transtemporal approach - Correct answers✔✔Circle of willis
Trans-orbital approach - Correct answers✔✔Ophthalmic artery
ACTUAL QUESTIONS AND CORRECT
ANSWERS
Anatomy of Arterial wall - Correct answers✔✔Tunica intima(blood flow
Tunitca media(muscular holds together)
Tunica externa(aventitia)(extends&contracts)
stoke volume - Correct answers✔✔the amount of blood entering the aorta with each ventricular
contraction
Windkessel effect - Correct answers✔✔The expansion and contraction of compliant vessels. In
the aorta the vessel expands and increases the volume within it, then when the pressure is
reduced, the vessel is able to contract to push the remaining blood forward. No backward flow is
allowed due to valves.
Blood flows - Correct answers✔✔Laminar
Disturbed
Turbulent
Plug
laminar flow - Correct answers✔✔Parabolic
Bullet
Layered
Normal
, turbulent blood flow - Correct answers✔✔type of blood flow resulting in audible sound; defined
by chaotic flow due to variations of pressure and velocity
Bernoulli's Principle - Correct answers✔✔as the velocity of a fluid increases, the pressure
exerted by the fluid decreases
Poiseville's Law - Correct answers✔✔resistance to air flow (R) is proportional to diameter of a
tube raised to the fourth power
R=d^4
Doppler angle - Correct answers✔✔The angle between the sound beam and the flow direction
45-60
spectral broadening - Correct answers✔✔the filling of the spectral window
Circle of Willis - Correct answers✔✔a circulatory anastomosis that supplies blood to the brain
and surrounding structures
What percent has circle of Willis? - Correct answers✔✔50%
How to open vessel - Correct answers✔✔Rotating and angle
transtemporal approach - Correct answers✔✔Circle of willis
Trans-orbital approach - Correct answers✔✔Ophthalmic artery
