ch18

53問 • 1年前

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通報

問題一覧

b&c

The part of the vessel wall that is a single layer of cells backed by a thin layer of elastin and collagen is

Intima

When red blood cells cling together to form clumps in areas of slow flow it is called

Rouleaux formation

A color bruit will most likely be imaged when there is

Turbulent flow distal to a significant stenosis

If a patient has normal arterial waveforms with low velocities in the vessels, which is most likely?

Low cardiac output

Which of the following is NOT found in normal veins?

Pulsatility

Veins and arteries are different in all of the following EXCEPT

Veins have thicker walls with a very little muscle

The outermost layer of the vessel wall is

Tunica adventitia

A normal venous signal is described as

Phasic

During inspiration (inhale) the intra-abdominal (below the diaphragm) pressure _______ so venous flow _____

Increases, increases

The pressure within a vein is

Directly proportion to the force on the vein wall from the blood volume in the vein

The normal dynamic venous pressure in the venules is 15 to 20 mmHg. What is the pressure in the rt atrium?

0 mmHg (within the rt atrium and is called the central venous pressure)

Normal venous characteristics include all EXCEPT

Continuous signal through respiration

The principle that states that blood flow from one point to another because of an energy gradient and is slowed by resistance is

Poiseuille’s Law

Venous valves are formed in which layer?

Intima

The physiology of circulation is called

Hemodynamics

Blood flow in concentric layers with the highest velocity in the center of the vessel is

Laminar flow

Following a significant stenosis, the swirling motion is called

Vortices

Which of the following is NOT true about the Reynolds number?

Is not included in the principles of fluid dynamics

Turbulence in flow following (distal to) a narrowing in the vessel is

Post stenotic turbulence

Laminar flow becomes disturbed when the Reynolds number is higher than

2000

The velocity of flow is __________ related to the cross-sectional area (size) of a vessel

Inversely

Blood pressure is

Pressure of the blood on the vessel wall

Exercise usually ___________ flow

Increases

The anatomy of arteries includes all of the following EXCEPT

Internal capsule

Which term describes the contraction or narrowing of the vessel lumen?

Vasoconstriction

Blood flow and pressure are not significantly compromised until _______ of cross sectional area is eliminated?

75%

Factors that influence a critical stenosis are

All of the above

The resistive index is used to quantify

Resistance

Which layer of the artery is the muscle layer?

Media

The principle factors affecting blood volume changes are

Cardiac output and peripheral resistance

The highest systolic velocity is located at

The narrowest portion of the stenosis

The artery with the smallest radius will have _____ if the other factors are all the same.

Higher resistance to flow

Flow information from a specific location is obtained by using the

Sample volume of the range gate

ch 6 AP

ch 6 AP

ch 9

ch 9

ch 11

ch 11

ch 16

ch 16

ch 12

ch 12

ch 13

ch 13

ch 14

ch 14

ch 17

ch 17

ch 19 (1)

ch 19 (1)

ch 15

ch 15

ch 4

ch 4

ch 9,10,11

ch 9,10,11

ch 12 & 13

ch 12 & 13

ch 14&15

ch 14&15

9-17

9-17

ch19-20

ch19-20

ch21-22

ch21-22

問題一覧

b&c

The part of the vessel wall that is a single layer of cells backed by a thin layer of elastin and collagen is

Intima

When red blood cells cling together to form clumps in areas of slow flow it is called

Rouleaux formation

A color bruit will most likely be imaged when there is

Turbulent flow distal to a significant stenosis

If a patient has normal arterial waveforms with low velocities in the vessels, which is most likely?

Low cardiac output

Which of the following is NOT found in normal veins?

Pulsatility

Veins and arteries are different in all of the following EXCEPT

Veins have thicker walls with a very little muscle

The outermost layer of the vessel wall is

Tunica adventitia

A normal venous signal is described as

Phasic

During inspiration (inhale) the intra-abdominal (below the diaphragm) pressure _______ so venous flow _____

Increases, increases

The pressure within a vein is

Directly proportion to the force on the vein wall from the blood volume in the vein

The normal dynamic venous pressure in the venules is 15 to 20 mmHg. What is the pressure in the rt atrium?

0 mmHg (within the rt atrium and is called the central venous pressure)

Normal venous characteristics include all EXCEPT

Continuous signal through respiration

The principle that states that blood flow from one point to another because of an energy gradient and is slowed by resistance is

Poiseuille’s Law

Venous valves are formed in which layer?

Intima

The physiology of circulation is called

Hemodynamics

Blood flow in concentric layers with the highest velocity in the center of the vessel is

Laminar flow

Following a significant stenosis, the swirling motion is called

Vortices

Which of the following is NOT true about the Reynolds number?

Is not included in the principles of fluid dynamics

Turbulence in flow following (distal to) a narrowing in the vessel is

Post stenotic turbulence

Laminar flow becomes disturbed when the Reynolds number is higher than

2000

The velocity of flow is __________ related to the cross-sectional area (size) of a vessel

Inversely

Blood pressure is

Pressure of the blood on the vessel wall

Exercise usually ___________ flow

Increases

The anatomy of arteries includes all of the following EXCEPT

Internal capsule

Which term describes the contraction or narrowing of the vessel lumen?

Vasoconstriction

Blood flow and pressure are not significantly compromised until _______ of cross sectional area is eliminated?

75%

Factors that influence a critical stenosis are

All of the above

The resistive index is used to quantify

Resistance

Which layer of the artery is the muscle layer?

Media

The principle factors affecting blood volume changes are

Cardiac output and peripheral resistance

The highest systolic velocity is located at

The narrowest portion of the stenosis

The artery with the smallest radius will have _____ if the other factors are all the same.

Higher resistance to flow

Flow information from a specific location is obtained by using the

Sample volume of the range gate