Brainscape's Knowledge GenomeTM

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


See full index

BRS (PHYSIO) > Cardiovascular (REVIEW TEST) > Flashcards

Cardiovascular (REVIEW TEST) Flashcards

1
Q

A 53 y/o woman is found, by arteriography to have 50% narrowing of her left renal artery what is the expected change in bloodflow through the stenotic artery

A

1/16

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

When a person moves from supine to standing position.

A

Increased contractility

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

At which site is sytolic BP the highest ?

A

renal artery

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

A persons ECG has no p wave but has normal QRS and a normal T wave. therefore his pacemaker is located in the

A

AV node

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

If the ejection fracion increases, there will be a decrease in

A

End systolic volume

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

An ECG shows ventricular extrasystoles

An extrasystolic beat would produce

A

Decreased pulse pressure because stroke volume is decreased

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

After an extrasystole, the enxt normal ventricular contraction produces

A

Increased oulse presssure because the contractility of the venricle is increased

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

An increae in contractility is demonstrated on a Frank starling diagram by

A

Increased cardiac output for a given end diastolic volume

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

On the graph left ventricular volume and pressure, isovilumentric conraction occurs

A

1-2

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

The aortic valve closes at point

A

point 3

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

The first heart sound corresponds to point

A

point 4

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

if the heart rate is 70 bpm, then the CO of this ventricle is closest to

A

5.25 L/min

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

In a capillary Pc is 30 mmHg, Pi is -2mmHg. and πc is 25 mmHg and πi is 2mmHg

What is the direction of fluid movement and the net driving force?

A

Filtration; 9 mmHg

(Pc-Pi) - (πc-πi)

30-(-2) -(25-2) mmHg

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

In a capillary Pc is 30 mmHg, Pi is -2mmHg. and πc is 25 mmHg and πi is 2mmHg

if Kf is 0.5 ml/min/mmHg, what is the rate of water flow across the capillary wall?

A

4.50 mL/min

Kf x net pressure

0.5 ml x 9

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

The tendency for blood flow to be turbulent is increased by

A

Partial occlusion of a blood vessel

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

A 66 y/o man who has had a sympathectomy, xperiences a greater than normal fall in arterial pressure upon standing up. The explaination for this is

A

A suppressed response of the baroreceptor mechanism

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

The ventricles are completely depolarized during which isoelectric portion of the ECG?

A

ST segment

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

In which of the ff situations is pulmonary blood flow greater than aortic blood flow?

A

Left to right ventricular shunt

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

The change indicated by the dashed lines on the cardiac output/venous return curves

A

Increased mean systemic pressure

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

A 30 y/o female patient’s ECG shows two P waves preceding each QRS complex. the interpretation for this is

A

Decreased conduction through AV node

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

An acute decrease in arterial blood pressure elicits which of the following compensatory changes

A

Decreased firing rate of the caortid sinus

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

The tendency for edema to occur will be increased by

A

Increased venous pressure

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

Inspiration splits the second heart sound because

A

the aortic valve closes before the pulmonic valve

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

During exercise, total peripheral resistance decreases because of the

A

Local metabolites on skeletal muscle

25
Q

Curve A in the figure

A

Aortic pressure

26
Q

Curve B in the figure

A

Ventricular volume

27
Q

An increase in arteriolar resistance, without a change in any other component of the cardiovascular system will produce

A

an increase in arterial pressure

28
Q

The following easurements were obtained

  • CVP 10 mmHg
  • HR: 70bpm
  • Systemic arterial oxygen - 0.24 ml
  • Mixed venous = 0.16
  • Whole body Oxygen consumption : 500 ml/min

What is the cardiac output?

A

8.00 L/min

29
Q

Which of the ff is the result of an inward sodium current

A

Upstroke of the action potential in Purkinje fibers

30
Q

The dashed line in the figure illustrates the effect of

A

Increased contractility

31
Q

The X axis in the figure could have been labeled

A

End diastolic volume

32
Q

The greatest pressure decrease in the circulation occurs across the arterioles because

A

They have the greatest resistance

33
Q

Pulse pressure is

A

Deermined by stroke volume

34
Q

In the SA node, phase 4 depolarization is attribuable to

A

increase in sodium conductance

35
Q

A healthy 35-year old man is runnin a marathon. During the run, there is an icnrease in his splanchinc vascular resistance, Which receptor is responsible for the increased resistance?

A

alpha 1 receptors

36
Q

During which phase of the cardiac cycle is aortic pressure highest

A

Reduced ventricular ejection

37
Q

Myocardial contractility is best correlated with the intracellular concentraion of

A

Calcium

38
Q

Which of the following is an effect of histamine

A

Vasodialtion of arterioles

39
Q

Carbon dioxide regualtes blood flow to which one of the ff organs

A

Brain

40
Q

Cardiac output of the right side of the heart is what percentatge of the ccardiac output of theleft side

A

100%

41
Q

The physiologic function of the relatively slow conduction through the av node is to allow sufficient time for

A

Filling of the ventricles

42
Q

Blood flow to which organ is controlled primarily bythe sympathethic nervous system rather than local metabolites

A

Skin

43
Q

Which of the followinh paramaters is decreased during moderate exercise?

A

total peripheral resistance

44
Q

A 72 y/o woman who is being treated with propanolol, finds that she cannot maintain her previous excercise routine. her physician explains that the drug has redced her cardiac output. Blockade of which recceptor is responsible for the decrease in cardiac output?

A

B1 receptors

45
Q

During which phase of the cardiac cyscle is ventricular volume lowest

A

isovolumetric ventricular relaxation

46
Q

Which of the following changes will cause an increasein myocardial oxygen consumption?

A

Increase size of the heart

47
Q

which of the following substance crosses capillary walls priarily through water fille clefts between endothelial cells

A

Glucose

48
Q

A 24 y/o woman presents to the emergency department with severe diarrhea. Whe she is supine, her BP is 90/60 and her HR is 100 bpm. when she is moved to a standing position, her HR increases to 120 bpm. which of the ff. accounts for the further increase in heart rate upon standing>

A

Decreased venous return

49
Q

A 60 y/o businessman is evaluated by his physician, who determines that his BP is significanty elevated at 185/130 mmHg. Lab tests reveal an increase plasma renin activity, plasma aldosterone level, and left renal vein renin level. Hist right renal vein renin level is decreased. What is the most likely cause?

A

Left renal artery stenosis

50
Q

During which phase of ventricular action potentil is the membrane potential closest to the K equilibrium potential?

A

phase 4

51
Q

During which phase of the venricular action potential is the conductance to calcium highest?

A

Phhase 2

52
Q

Which phase of the ventricular action potential coincides with diastole?

A

Phase 4

53
Q

Propanolol hhas which of the ff effects?

A

Decreases heart rate

54
Q

Which receptor mediates slowing of the heart?

A

Muscarinic receptor

55
Q

Which of the ff agents or changes has negative inotropic effect on the heart?

A

ACh

56
Q

The low resistance pathways between myocardial cells that allow for the spread of action potentials are the?

A

gap junctions

57
Q
  • Which agent is released or secreted after a hemorrhage and causes an incease in renal Na reabsorption
A

Aldosterone

58
Q

During which phase of the cardiac cycle does the mitral valve open

A

Isovlumetric relaxation

59
Q

A hospitalied oatient has an ejectionfraction of 0.4, a heart rate of 95 bpm and a cardiac output of 3.5 L/min. What is the aptients EDV?

A

92 ml

CO =SV x HR

EF = SV-EDV

BRS (PHYSIO) (14 decks)

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