Brainscape's Knowledge GenomeTM

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


See full index

Cardiology > Cardiac Cycle > Flashcards

Cardiac Cycle Flashcards

1
Q

When do heart valves produce a sound?

A

When they shut They DO NOT make a sound when they open

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

Name the 5 ‘events’ during the cell cycle

A

Passive filling

Atrial contraction (completes ventricular filling)

Isovolumetric ventricular contraction

Ventricular ejection

Isovolumetric ventricular relaxation

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

How full do the ventricles become during passive filling?

A

~80%

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

How to the pressures in the right side of the heart/arteries differ from the left?

A

The pressures (in the right ventricular and pulmonary arteries) are much lower

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

During passive filling the ___ valves open so venous return flows into the _______

A

AV

ventricles

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

During passive filling pressure in the atria and ventricles is ______

A

close to zero

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

What does the P wave in an ECG signal

A

depolarisation

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

What happens to the heart in-between the P wave and the QRS

A

Atria contracts

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

When atrial contraction is complete the End Diastolic Volume is roughly ____ml in resting normal adult

A

130

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

When does ventricular contraction occur (use ECG points to clarify)

A

Ventricular contraction stars after the QRS (signals ventricular depolarisation) in the ECG

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

During isovolumetric ventricular contraction, the ventricular pressure ______

A

rises

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

When the ventricular pressure exceeds the atrial pressure the ____ valves ____

A

AV (atrioventricular) shut *this produces the first heart sound (LUB)

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

During isovolumetric ventricular contraction, what valves are shut?

A

The aortic valve is still shut so no blood can enter or leave the ventricle The AV valves (mitral/bicuspid)

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

When tension rises around a closed volume this is called _____. it causes the ventricular pressure to _______

A

Isovolumetric contraction Rise VERY steeply

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

When the ventricular pressure exceeds aorta/pulmonary artery pressure the ____ valves open

A

Aortic/pulmonary valve *SILENT EVENT

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

During ventricular ejection the stroke volume (SV) is ejected by each ventricle, leaving behind the _______

A

End diastolic volume

17
Q

During ventricular ejection the aortic pressure _____

A

rises

18
Q

What wave in the ECG signals ventricular repolarisation

A

T-wave

19
Q

During ventricular ejection the ventricles relax and the ventricular pressure starts to _____

A

fall

20
Q

When the ventricular pressure falls below aortic/pulmonary pressure what happens?

A

aortic/pulmonary valves shut This produces the SECOND HEART SOUND (DUB)

21
Q

The aortic valve closure coincides with valve vibration which produces the _____ _____ in aortic pressure curve

A

dicrotic notch

22
Q

Closed off aortic/pulmonary valves signals the start of the ________ ________ _______

A

Isovolumetric ventricular relaxation

23
Q

When tension falls around a closed volume this is called?

A

Isovolumetric relaxation

24
Q

When the ventricular pressure falls below atrial pressure, AV valves ______ and the heart starts a new cycle

A

Open

25
Q

HEART SOUNDS The first heart sound (S1) is caused by _______ and ______. It sounds like a “lub”

A

Closure of mitral and tricuspid valves

26
Q

HEART SOUNDS S1 heralds the beginning of ______

A

Systole

27
Q

HEART SOUNDS The second heart sound (S2) is caused by ________ and ________. It sounds like a “dub”

A

Closure of aortic and pulmonary valves

28
Q

How many heart sounds is normal?

A

2 Additional heart sounds (S3 or S4) may be heard - not normal

29
Q

The RED area is where you would auscultate for what valve?

A

Aortic

30
Q

The BLUE area is where you would auscultate for what valve?

A

Pulmonary

31
Q

The GREEN area is where you would auscultate for what valve?

A

Tricuspid

32
Q

The PINK area is where you would auscultate for what valve?

A

Mitral

33
Q

How does arterial pressure not fall to zero during diastole?

A

The heart, arteries, and veins comprise a closed system under constant pressure. (If the pressure wasn’t constant, blood would not flow.) The systolic blood pressure represents the amount of pressure exerted by blood on arteries when the heart beats; the diastolic pressure is the pressure when the heart is at rest. Since there is constant pressure in the circulatory system, diastolic pressure cannot be zero, or there would be no blood flow

34
Q

When does the JVP occur?

A

Afer right arterial pressure waves

35
Q

Point ‘a’ is _____ ______

A

Atrial contraction

36
Q

Point ‘c’ is _____

A

Bulging of the tricspid valve into atrium

37
Q

Point ‘v’ is _____

A

rise of arterial pressure during atrial filling

*release as AV valves open

Cardiology (5 decks)

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