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Heart as a Pump > Questions for Heart as a Pump > Flashcards

Questions for Heart as a Pump Flashcards

Covers aspects of the cardiac cycle occurring in time and on a PV plot.

1
Q

Respond with the best phrase.

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

A

tricuspid

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2
Q

Respond with the best phrase.

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

A

mitral

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3
Q

Respond with the best phrase.

The emptying valve for the right ventricle is the ___________________valve.

A

pulmonic

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4
Q

Respond with the best phrase.

The emptying valve for the left ventricle is the ___________________valve.

A

aortic

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5
Q

Respond with the best phrase.

The P wave of the ECG marks ___________________.

A

atrial depolarization

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6
Q

Respond with the best phrase.

The QRS complex of the ECG marks ___________________.

A

ventricular depolarization

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7
Q

Respond with the best phrase.

The T wave of the ECG marks _________________.

A

ventricular repolarization

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8
Q

Respond with the best phrase.

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

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9
Q

Respond with the best phrase.

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

A

None

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10
Q

Respond with the best phrase.

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

A

mitral

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11
Q

Respond with the best phrase.

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

A

AV node

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12
Q

Respond with the best phrase.

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

A

tricuspid and mitral

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13
Q

Respond with the best phrase.

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

A

None–valve opening does not create a sound.

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14
Q

Respond with the best phrase.

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

A

End diastolic volume

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15
Q

Respond with the best phrase.

Ventricular repolarization results in what ECG wave?

A

T wave

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16
Q

Respond with the best phrase.

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

Respond with the best phrase.

Right ventricular muscle shortening begins when the ______________ valve opens.

A

pulmonic

19
Q

Respond with the best phrase.

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

A

isovolumetric relaxation

20
Q

Respond with the best phrase.

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

A

diastole

21
Q

Respond with the best phrase.

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

A

systole

22
Q

Respond with the best phrase.

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

A

end systolic volume

23
Q

Respond with the best phrase.

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

A

isovolumetric

24
Q

Respond with the best phrase.

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

A

imaginary–no such phase exists

25
Q

Respond with the best phrase.

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

A

aortic

26
Q

Respond with the best phrase.

Arterial diastolic pressure occurs when the ______________________ valve opens.

A

aortic

27
Q

Respond with the best phrase.

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

A

mitral

28
Q

Respond with the best phrase.

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

A

pulmonic

29
Q

Respond with the best phrase.

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

Respond with the best phrase.

Ventricular filling follows the __________________ curve on the PV plot.

A

passive relaxation

32
Q

Respond with the best phrase.

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

A

end

33
Q

Respond with the best phrase.

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

Respond with the best phrase.

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

A

decrease

35
Q

Respond with the best phrase.

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

A

increase

36
Q

Respond with the best phrase.

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

A

increase

37
Q

Respond with the best phrase.

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

A

decrease

38
Q

Respond with the best phrase.

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.

Heart as a Pump (1 decks)

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