Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

FF4 EXAM 1 > Circulatory Hemodynamics + Syst/Pulm Circulation > Flashcards

Circulatory Hemodynamics + Syst/Pulm Circulation Flashcards

1
Q

Circulation divides into:

A

Systemic and Pulmonary

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

Which part of systematic circulation has more blood circulating?

A

Venous Reservoir

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

The Circulation associated with carrying oxygenated blood from the Left side is the:

A

System

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

The low pressure system is the:

A

Pulmonary circulation

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

The resistance vessels are

A

Arterioles

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

Capillaries are described as _____________ vessels

A

Exchange

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

Capacitance vessels are the

A

Venules

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

Between systemic and pulmonary circulation, which one has more blood distributed?

A

Systemic

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

Describe Ohm’s Law of Circulation

A

Blood flow occurs when there is a difference in pressure in the 2 ends of the vessel

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

The quantity of blood that passes through a given point in circulation is:

A

Blood flow

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

What is identical to blood flow?

A

Cardiac output

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

List 2 factors affecting blood flow

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

Define BP

A

Force exerted by the blood against any area of a vessel wall; stored energy

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

What generates BP?

A

Ventricular contraction, total peripheral resistance and mean circulatory filling pressure

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

The energy used up by friction is converted into?

A

Heat

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

In what part of the circulation system is there a maximal drop in BP?

A

Arterioles because of maximum resistance

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

What does functional pressure prevent?

A

Leakage of substances into surrounding tissues

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

The mean pressure in pulmonary circulation is how much in regards to systemic pressure

A

1/6

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

Aortic mean arterial pressure is:

A

100 mmHg

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

What are the 3 types of pressure?

A
  • MAP
  • Systolic
  • Diastolic
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

The pressure of blood ejected into the aorta is:

A

Systolic

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

In what units is Blood flow determined?

A

ml/min or L/min or volume/time

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

Resistance = pressure/ ?

A

flow

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

The streamlined flow when the interior of the vessel is smooth and equal in diameter is:

A

Laminar flood

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

Turbulent flow is ?

A

Interrupted flow when the interior of the vessel is constricted

26
Q

What measures the tendency for turbulent flow?

A

Reynold’s number

27
Q

List the factors affecting Reynold’s number

A

Velocity = v
diameter = d
density = p
viscosity = greek n

28
Q

Where is flow the greatest in a vessel?

A

In the center of the vessel

29
Q

The 2 methods you can measure blood flow are:

A

Electromagnetic and US doppler

30
Q

What sounds will be produced when auscultating arterial pressure while measuring it?

A

Kortotkoff Sounds - blood jetting through occluded vessel

31
Q

When Korotkoff sounds disappear, what does that mean?

A

Diastolic pressure

32
Q

The average of all pressure measured?

A

Mean Arterial pressure

33
Q

Total resistance in the parallel circuit is (less/more) than a single blood vessel

34
Q

Total Peripheral Resistance is because of what?

A

Arrangement of parallel circuits because of branching
TPR will be 1/R + 1/R2 + …

35
Q

What is the systemic circulation TPR?

A

1 (100mmHg/100ml Sec)

36
Q

If vessels are constricted, TPR (increases or decreases)

37
Q

How much of total pulmonary vascular resistance is the TPR?

38
Q

What is the formula for arterial pressure?

39
Q

If CO = 4 L/min and TPR = 3, what would the MAP be?

40
Q

Pulmonary vascular resistance is calculated by ?

A

Mean Aortic pressure - Mean Venacaval pressure / CO

41
Q

1 / Resistance = ?

A

Conductance

42
Q

What is the measure of blood flow through a vessel for a given pressure difference?

A

Conductance

43
Q

Conductance of a vessel increases in proportion to the fourth power of the ____________ ?

44
Q

Conductance is directly proportional to ?

A

Diameter of the vessel

45
Q

Vasoconstriction (Increases/decreases) resistance

46
Q

What law is used to calculate conductance?

A

Poiseuille’s Law (Q)

47
Q

The % of blood that is cells that can increase the blood viscosity is”

A

Hematocrit (f)

48
Q

Describe the Fahraeus-Lindqvist effect

A

Decrease in viscosity in small vessels because cells become aligned in the axis of the vessel

49
Q

What is the name of the formation when a RBC adherence produces blockage of a vessel?

50
Q

Are arteries or veins more distensible?

51
Q

The tendency for blood vessels volume to increase as BP increases is:

A

Vascular compliance (capacitance) - how much force is required to achieve distension

52
Q

Inhibited sympathetic tone will do what to pressure?

53
Q

How can circulation accommodate a large amount of blood?

A

Through delayed compliance (stress relaxation)

54
Q

If not for ______________, blood flow would only happen during systole

A

Distensibility

55
Q

Elasticity is the ability to ?

A

Return to original level after distension

56
Q

The difference between systole and distole =

A

pulse pressure

57
Q

List some factors that increase Pulse pressure

A
  • stroke volume
  • HR
  • Arterial compliance
  • Arterial vasoconstriction
58
Q

Define damping of pulse pressure

A

Progressive diminishment in pulse pressure

Dampening = resistance x compliance

59
Q

List a vein function

A
  • Storage for blood
  • help regulate CO
60
Q

When blood is lost and arterial pressure decreases, what part of the nervous systems is activated?

A

Sympathetic Nervous system

FF4 EXAM 1 (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions