Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Vascular Registry > Ch. 4 Arterial Hemodynamics > Flashcards

Ch. 4 Arterial Hemodynamics Flashcards

1
Q

pressure is greater where?

A

at the left ventricle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

blood moves from areas of ___ to ___

A

high pressure to low pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

blood leaves the heart with a mean pressure of ___

A

85-95 mmhg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

where is the biggest drop in pressure?

A

arterioles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

within the arterioles pressure will fall from app 80 down to ___

A

25-30 mmHG

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is the pressure at the right atrium

A

0 mmHG

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

___: how much blood is moving

A

flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

___: how fast the blood is moving

A

velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is the term for flow with a constant velocity

A

steady flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is the term for flow with variable velocity due to cardiac contractions

A

pulsatile

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is the term for variation in velocity due to respiration

A

phasic flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what are the three primary forms of energy loss as blood moves through the vessels

A

-friction
-viscosity
inertia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

an increase in viscosity = ___ in velocity

A

decrease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

a decrease in viscosity = __ in velocity

A

increase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

___: smooth organized flow

A

laminar flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what are the two types of laminar flow

A

-plug
-parabolic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

which type of laminar flow is the same from wall to wall

A

plug flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

which type of laminar flow is slower at the vessel wall and faster in the center

A

parabolic flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

which flow is considered parabolic

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

which flow is considered plug

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

___: value that predicts when laminar flow becomes turbulent

A

Reynolds number

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Reynolds number of <1500 = what kind of flow

A

laminar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Reynolds number >2000 = what kind of flow

A

turbulent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

if this is the equation for resistance what does each part represent

A

n= viscosity
L= length
r= radius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

what is the equation for resistance

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

if viscosity increases, resistance ___

A

increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

if viscosity decreased, resistance ___

A

decreases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

if vessel length increases, resistance ___

A

increases

29
Q

if vessel length decreases, resistance ___

A

decreases

30
Q

if vessel radius increases, resistance ___

A

decreases

31
Q

if vessel radius decreases, resistance ___

A

increase

32
Q

resistance determines _____ in the arteries

A

rate of flow

33
Q

which usually has a higher resistance blood going to the organs or blood going to the extremities

A

extremities

34
Q

what has the greatest effect on flow resistance

A

vessel diameter

35
Q

what happens to your resistance proximal to a stenosis, why

A

it will begin to increase, the vessel diameter will begin to decrease

36
Q

what happens to your resistance distal to stenosis, why

A

begins to decrease, vessel will begin to get larger changing the diameter of the vessel

37
Q

an increase in resistance would lead to a ___ in flow volume

A

decrease

38
Q

an increase in resistance would lead to a ___ in pressure

A

increase

39
Q

which of the following is a high restive flow pattern

A

1

40
Q

which of the following is a low resistive flow pattern

A

2

41
Q

___: decries how much fluid moves through a pathway

A

poiseuille's law

42
Q

what is poiseuille's equation and what does each part represent

A

43
Q

according to poiseuille's laws what causes the most significant changes in flow

A

small changes in vessel radius

44
Q

if the vessel diameter decreases what happens to the velocity

A

increases

45
Q

if vessel diameter increases what happens to velocity

A

decreases

46
Q

describe the stenotic profile prox at and distal to the stenosis

A

-proximal: may or may not be altered depending of severity of snenosis and where the same is being taken
-at stenosis: increased velocity and spectral broadenign
-distal: turbulence

47
Q

___: relationship between velocity and pressure

A

Bernoulli's principle

48
Q

as velocity increases what happens to pressure

A

decreases

49
Q

as velocity decreases what happens to pressure

A

increases

50
Q

what is Bernoulli equation and what does each part represent

A

51
Q

what happens to pressure and velocity at a stenosis

A

velocity will increase causing a decrease in pressure

52
Q

what happens to the blood vessel with exercise

A

vasodilation

53
Q

with vasodilation what happens to pressure, resistance, and volume

A

-pressure: decreased
-resistance: decreased
-volume: increase

54
Q

___: the ability of most tissues and organs to maintain constant blood flow despite changes in perfusion and pressure

A

auto regulation

55
Q

if BP drops what occurs

A

vasodilation

56
Q

if BP rises what occurs

A

vasoconstriction

57
Q

does the vessel dilate or constrict with exercise

A

vasodilation

58
Q

what happens to resistance in extremities with exercise

A

turned from high resistance to low because of vasodilation

59
Q

what vessel ill change from high to low after eating due to vasodilation

A

splanchnic

60
Q

a cool limb would have what kind of flow and why

A

high resistance due to vasoconstriction

61
Q

a warm limb would have what kind of flow and why

A

low resistive due to vasodilation

62
Q

and increased hematocrit would have ___ viscosity

A

increased

63
Q

anemia is the result of ___ viscosity

A

decreased

64
Q

a delayed upstroke means a stenosis could be ____

A

proximal

65
Q

with vasoconstriction what happens to the radius, resistance, and volume

A

-decreased radius
-increased resistance
-decreased volume

66
Q

what re some things that cause vasoconstriction

A

-cold
-stress
-smoking

67
Q

what are some things that can cause vasodilation

A

-heat
-exercise
-stenosis

68
Q

at a stenos when velocity is increased what happens to the pressure

A

decreases

Vascular Registry (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions