Vascular Theory Chapter 4 Practice Questions

Tibial Peroneal Artery rises out of what vessel?

Popliteal

Biggest advantage of PW Doppler over CW Doppler

PW Doppler selects sample volume

Poiseuille's law states an increase in change in pressure will?

Increase blood flow with same components

Capillary is defined as?

exchange of nutrients & waste

Vessels that form the portal vein?

Superior Mesenteric and splenic Vein

What vessel supplies the intestines?

Superior Mesenteric Artery

the RT Carotid (CCA) orignates from what atery?

Brachiocephalic Artery

what vessel wall maintains tone and blood pressure?

Tunica Media

Which vessel shows low resistance doppler waveform?

Internal Carotid Artery (ICA)

Which vessels main resistance in the Vascular System?

Arterioles

What happens when Arterial walls age?

Capacitance decrease as walls stiffen

The difference between plug flow and parabolic (laminar) flow?

Plug Flow uniform velocity across the vessel

The function of the Circle of Willis?

provides collateral circulation to cerebral tissue

what component of Blood influences Viscosity?

Hematocrit

How does chemical factor control blood flow in tissue bed?

Oxygen Levels

Which Doppler is based on amplitude and lacks direction?

Power Doppler

What doppler shift happens when blood flow towards transducer?

Positive Shift

Doppler finding of tight stenosis?

Spectral Broadening & Aliasing

Which principle increase velocity with decreased pressure in a vessel?

Bernoullies Principle

What Artificate appears as paralell lines?

Reverberation

Which Arteries are from the Circle of Willis

Internal Carotid and vertebral branches

Which wave form change is distal to hemodynamically signific stenosis ?

Monophasic Damped Velocity

What is the flow direction of Vertebral Arteries?

Toward the brain

What is the Longest vein in the body?

great saphenous vein