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Flashcards in Questions for Heart as a Pump Deck (39)
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1
Q

Respond with the best phrase.

The filling valve for the right ventricle is the __________________ valve.

A

tricuspid

2
Q

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The filling valve for the left ventricle is the ___________________ valve.

A

mitral

3
Q

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The emptying valve for the right ventricle is the ___________________valve.

A

pulmonic

4
Q

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The emptying valve for the left ventricle is the ___________________valve.

A

aortic

5
Q

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The P wave of the ECG marks ___________________.

A

atrial depolarization

6
Q

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The QRS complex of the ECG marks ___________________.

A

ventricular depolarization

7
Q

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The T wave of the ECG marks _________________.

A

ventricular repolarization

8
Q

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The change in left ventricular pressure, lowest to greatest, during a typical cardiac cycle is about ______________ times that in the aorta.

A

3x : 120 vs. 40

9
Q

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Left atrial contraction directly results in the closure of which cardiac valve?

A

None

10
Q

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Left ventricular contraction directly results in the closure of which cardiac valve?

A

mitral

11
Q

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The aortic valve opens shortly after activation of which excitable cardiac node?

A

AV node

12
Q

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The 1st heart sound follows closure of which ventricular valves?.

A

tricuspid and mitral

13
Q

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Which heart sound is caused by the opening of the pulmonic and aortic valves?

A

None–valve opening does not create a sound.

14
Q

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The volume of the ventricle at the time of the QRS is called the _________________ .

A

End diastolic volume

15
Q

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Ventricular repolarization results in what ECG wave?

A

T wave

16
Q

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The most rapid flow rate out of each ventricle occurs between which ECG waves?

A

QRS and T waves

17
Q

Respond with the best phrase.

The cardiac phase between the QRS wave and aortic valve opening is called ________________ .

A

isovolumetric contraction

18
Q

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Right ventricular muscle shortening begins when the ______________ valve opens.

A

pulmonic

19
Q

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The cardiac phase between the closure of the pulmonic and the opening of the tricuspid valves is called ______________________.

A

isovolumetric relaxation

20
Q

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The portion of the cardiac cycle from closure of the aortic valve to the QRS wave is called ventricular ___________________.

A

diastole

21
Q

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The portion of the cardiac cycle from the QRS wave to the closure of the aortic valve is called ventricular ________________.

A

systole

22
Q

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The left ventricular volume at the time the aortic valve closes is called the ________________.

A

end systolic volume

23
Q

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The phases of the cardiac cycle when all valves are closed are termed _____________.

A

isovolumetric

24
Q

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The phases of the cardiac cycle when all valves are open are termed ____________.

A

imaginary–no such phase exists

25
Q

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During systole, left ventricular wall tension is lowest when the _______________ valve closes.

A

aortic

26
Q

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Arterial diastolic pressure occurs when the ______________________ valve opens.

A

aortic

27
Q

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In any given cycle, left ventricular preload is greatest when the ___________________ valve closes.

A

mitral

28
Q

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Right ventricular afterload is first determined when the ______________ valve opens.

A

pulmonic

29
Q

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Left ventricular EDV represents ____________________ for ventricular muscle.

A

preload

30
Q

Respond with the best phrase.

For any given cycle, stroke volume is defined as the volume difference_______________ .

A

EDV minus ESV

31
Q

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Ventricular filling follows the __________________ curve on the PV plot.

A

passive relaxation

32
Q

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For any preload and afterload, the ESPV curve on the PV plot locates where any systolic shortening must ________.

A

end

33
Q

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For any given cycle, the end of systolic shortening is determined by the location of the _________________________ curve.

A

ESPV, end-systolic pressure-volume

34
Q

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All else equal, an increase in Pa diastolic would ___________________ stroke volume.

A

decrease

35
Q

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All else equal, an increase in contractility would ___________________ stroke volume.

A

increase

36
Q

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All else equal, an increase in ventricular end diastolic pressure would ___________________ stroke volume.

A

increase

37
Q

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For any given cycle, a decrease in Pa diastolic would __________________ ESV.

A

decrease

38
Q

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If ESV decreases when EDV and Pa diastolic are unchanged, you would guess that _____________________ has increased.

A

contractility

39
Q

The variation of peak developed cardiac muscle tension with the frequency of activation is called _________.

A

Treppe or the staircase phenomenon.