Brainscape's Knowledge GenomeTM

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


See full index

Human Physiology > W5 - CV System > Flashcards

W5 - CV System Flashcards

1
Q

What are the purposes of the CV system?

A

Blood transport around body

Regulation of body temp

Supports immune function

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

In the heart sounds, what is the “Lub”?

A

Closing of AV valves

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

In the heart sounds, what is the “Dub”?

A

Closing of SL valves

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

What can the SA node be broken down into?

A

Anterior internodal tract

Middle internodal tract

Posterior internodal tract

Bachmanns bundle

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

P wave

A

Atrial depolarisation

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

QRS complex

A

Ventricular depolarisation

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

T wave

A

Ventricular repolarisation

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

What initiates atrial depolarisation?

A

SA node

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

What does the flat part on an ECG between the end of P wave + the start of QRS complex represent?

A

Impulse being delayed by AV node.

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

At which part of the QRS complex does ventricular depolarisation happen?

A

At apex

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

Where on an ECG graph does it show where ventricular depolarisation is complete?

A

Flat part between S of QRS complex + start of T wave

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

Where on an ECG graph does ventricular repolarisation begin?

A

At apex of T wave

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

Where on an ECG graph does it show that ventricular repolarisation is complete?

A

Flat part after T wave

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

Resting HR for untrained females + males

A

~70 bpm

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

Resting HR for trained females + males

A

~50 bpm

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

Resting HR for bradycardia

A

Less than 60 bpm

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

Resting HR for tachycardia

A

More than 100 bpm

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

How is SV calculated?

A

End diastolic vol - end systolic vol

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

Resting values for SV in untrained females

A

50ml

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

Resting values for SV in untrained males

A

70ml

21
Q

Resting values for SV in trained females

A

80ml

22
Q

Resting values for SV in trained males

A

110ml

23
Q

Define the Ejection Fraction (EF)

A

Proportion of blood pumped out of left ventricle w/ each beat

(%)

24
Q

Average ejection fraction at rest

A

60%

25
Q

How is EF calculated?

A

(SV / End diastolic vol) x 100

26
Q

Define blood pressure

A

Force exerted by blood vs arterial walls during cardiac cycle

27
Q

What are the units for bp

A

mmHg

28
Q

What is systolic bp

A

Force exerted during ventricular systole

29
Q

Which is the highest pressure w/in the vascular system?

A

Systolic bp

30
Q

What is the diastolic bp

A

Force exerted during ventricular diastole

31
Q

Which is the lowest pressure w/in the vascular system?

A

Diastolic bp

32
Q

On a graph showing arterial pulse waveforms, where can the dicrotic notch be found?

A

As a secondary upstroke in the descending part of a pulse.

33
Q

What does the dicrotic notch represent?

A

End of systole + beginning of diastole in those arteries.

34
Q

What comes under after the dicrotic notch on a graph showing arterial pulse waveforms?

A

Diastolic run-off

35
Q

How is bp expressed?

A

As a ratio:

SBP over DBP

S- Systolic
D - Diastolic

36
Q

What is the normal value for SBP

A

120 mmHg

37
Q

What is the normal value for DBP

A

80 mmHg

38
Q

Define mean arterial pressure (MAP)

A

Avg arterial pressure throughout 1 cardiac cycle.

39
Q

What are the 2 formulas to calculate MAP

A

DBP + 1/3(SBP-DBP)

2/3(DBP) + 1/3(SBP)

40
Q

Define Rate-pressure product (RPP)

A

Estimation of myocardial workload + resulting O2 consumption

41
Q

How is RPP calculated?

A

SBP x HR

42
Q

How is vessel resistance calculated?

A

(Vessel length x viscosity ) / Vessel radius ^4

43
Q

How is vessel flow calculated?

A

Pressure grad / vessel resistance

44
Q

How is blood flow calculated?

A

(Pressure grad x vessel rad^4) / (vessel length x viscosity)

45
Q

What part of this equation to calculate blood flow stays constant?

(Pressure grad x vessel rad^4) / (vessel length x viscosity)

A

Vessel length

46
Q

What part of this equation to calculate blood flow has a slight variation?

(Pressure grad x vessel rad^4) / (vessel length x viscosity)

A

Viscosity

47
Q

List the key determinants for bp

A

Blood vol

Peripheral resistance

Blood viscosity

HR

SV

48
Q

Intrinsic HR

What is the internal rhythm set at?

A

100bpm

49
Q

What 2 parts can the CCC (Cardiac control centre) be split into?

A

CAC (Cardioaccelerator centre) at SNS

CIC (Cardioninhibitory centre) at PNS

Human Physiology (16 decks)

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