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[PHY2] 2ND SHIFT > Heart As a Pump > Flashcards

Heart As a Pump Flashcards

1
Q

Filling Time
1. Systole
2. Diastole

A

1 < 3

we need all the time we could grt to fill

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2
Q
  1. Heart Rate
  2. Cardiac Cycle Duration
A

Increase in 1 will Decrease 2

Faster heart rate, less time it takes

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3
Q
  1. Heart Rate
  2. Diastole
A

Increase in 1 will Decrease 2

Faster HR less time to fill

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4
Q

Valves during Systole
1. Atrioventricular V
2. Semilunar V

A

1 > 2
prevent backflow from ventricles

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5
Q

Open AV Valves
1. Atrial Pressure
2. Ventricular Pressure

A

1 > 2

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6
Q

Close AV Valves
1. Atrial P
2. Ventricular P

A

1 < 2

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7
Q

Valves during Diastole
1. AV
2. Semilunar

A

1 < 2

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8
Q

Pressure
1. Aortic
2. Pulmonary

A

1 > 2

Aortic pressure is the highest

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9
Q

Surface Area
1. AV
2. Semilunar

A

1 > 2

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10
Q

Open Semilunar V
1. Aortic/Pulmonary P
2. Ventricular P

A

1 < 2

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11
Q

CLOSE Semilunar
1. Aortic Pulmonary P
2. Ventricular P

A

1 > 2

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12
Q

Isovolumetric Contracton
* Event
* Blood Flow

  1. Ventricular P
  2. Atrial Pressure
  3. Ventricular P
  4. Arterial (Aortic) P

AV Valves
Heart Sound
ECG

A
  • Event: Ventricle Starts to contract
  • Blood Flow: None
  1. Ventricular P
  2. Atrial Pressure
    * 1 > 2
  3. Ventricular P
  4. Arterial (Aortic) P
    * 1 < 2

AV Valves: Mitral Valve CLoses
Heart Sound: **S1 Lub **
ECG: QRS - Ventricular Depolarization

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13
Q

Ventricular Ejection
* Event
* Blood Flow

  1. Ventricular P
  2. Atrial Pressure
  3. Ventricular P
  4. Arterial (Aortic) P

AV Valves
SL Valves

A

Ventricular Ejection
* Event: Ventricle is contracting
* Blood Flow: Outflow of 70mL

  1. Ventricular P
  2. Atrial Pressure
    * 1 > 2
  3. Ventricular P
  4. Arterial (Aortic) P
    1 > 2

AV Valves: Closed
SL Valves: Open

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14
Q

Isovolumetric Relaxation
* Event
* Blood Flow

  1. Ventricular P
  2. Atrial Pressure
  3. Ventricular P
  4. Arterial (Aortic) P

AV Valves
Heart Sound
ECG

A

Isovolumetric Relaxation
* Event: Ventricle Relaxes
* Blood Flow: None

  1. Ventricular P
  2. Atrial Pressure
    * 1 > 2 - continiously decreasing
  3. Ventricular P
  4. Arterial (Aortic) P
    * 1 < 2

AV Valves: Closed
SL Valves: Closed
Heart Sound: S2
ECG: T Wave - ventricular repolarization

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15
Q

Rapid Inflow
* Event
* Blood Flow

  1. Ventricular P
  2. Atrial Pressure
  3. Ventricular P
  4. Arterial (Aortic) P

AV Valves
SL Valves

A

Rapid Inflow
* Event: Ventricles relaxes
* Blood Flow: Rapid inflow of 50 mL
​
1. Ventricular P
2. Atrial Pressure
* 1 < 2
​
1. Ventricular P
2. Arterial (Aortic) P
* 1 < 2
​
AV Valves: Open
SL Valves: Closed

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16
Q

Diastasis
* Event
* Blood Flow

  1. Ventricular P
  2. Atrial Pressure
  3. Ventricular P
  4. Arterial (Aortic) P

AV Valves
SL Valves

A
  • Event: Ventricle is relaxed
  • Blood Flow: slow inflow of 20 mL
  1. Ventricular P
  2. Atrial Pressure
    * 1 < 2
  3. Ventricular P
  4. Arterial (Aortic) P
    1 < 2

AV Valves: Open
SL Valves: Closed

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17
Q

Atrial Systole
* Event
* Blood Flow

  1. Ventricular P
  2. Atrial Pressure
  3. Ventricular P
  4. Arterial (Aortic) P

AV Valves
SL Valves

A
  • Event: Atria Contracts
  • Blood Flow: augmented inflow of 20%
  1. Ventricular P
  2. Atrial Pressure
    * 1 < 2 – ventricular p slowly increasing
  3. Ventricular P
  4. Arterial (Aortic) P
    1 < 2

AV Valves: Open
SL Valves: Closed
ECG: P Wave - atrial depolarization

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18
Q

Events under Systole

A
  1. Isovolumetric Contraction
  2. Ventricular Ejection
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19
Q

Events under Diastole

A
  1. Isovolumetric Relaxation
  2. Rapid Inflow
  3. Diastasis/Slow Inflow
  4. Atrial Systole
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20
Q

a wave is part of

A

atrial contraction

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21
Q

c wave happens when

A
  • ventricles contract
  • av valves close
  • slight back flow of blood
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22
Q

v wave happens when

A
  • slow flow of blood into the atria
  • av valves close
  • indicates end of ventricular contraction
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23
Q

Duration of
1. S1
2. S2

A

1 < 2

24
Q

Duration of
1. S1
2. S2

A

1 < 2

25
Q

S1 occurs prior to
* signals which events
* closure of which valve

A

systole
* isovolumetric contration
* AV valve

26
Q

S2 occurs prior to
* signals which event
* closure of which valve

A

diastole
* isovolumetric relaxation
* SL valve

27
Q

S3 occurs during

A

rapid filling phase
abnormal in adults

28
Q
  1. Exercise
  2. Stroke Volume
A

Increase in 1 will Increase 2

29
Q

Normal Ejection Fraction

A

60 - 70%

30
Q
  1. Heart Failure
  2. EF
A

Increase in 1 will Decrease 2

31
Q

Volume of blood in ventricles at the end of Diastole
* Surrogate Marker

A

Preload
* Ennd Diastolic Pressure

32
Q
  1. End Diastolic Pressure
  2. Preload
A

Increase in 1 will Increase 2

33
Q
  1. Preload
  2. Force of Contraction
A

Increase in 1 will Increase 2

34
Q

Pressure or resistance against which the ventricle must overcome

A

Afterload

35
Q
  1. Hypertension
  2. Afterload
A

Increase in 1 will Increase 2

36
Q
  1. Afterload
  2. Ejected Blood
A

Increase in 1 will Decrease 2

37
Q
  1. Stenosis of Heart valves
  2. Afterload
A

Increase in 1 will increase 2

38
Q

Active Pressure
1. EDV of 120
2. EDV of 130

A

1 > 2

39
Q

Active Pressure
1. EDV of 100
2. EDV of 130

A

1 > 2

40
Q
  1. Stretch Length
  2. Passive Tension
A

Increase in 1 will Increase 2

41
Q
  1. Stroke Volume
  2. Cardiac Output
A

Increase in 1 will Increase 2

42
Q
  1. Afterload
  2. Cardiac Output
A

Increase in 1 will decrease 2

43
Q
  1. Heart Rate
  2. Stroke Volume
A

Increase in 1 will Decrease 2

44
Q
  1. Diastole Duration
  2. SV
A

Increase in 1 will Increase 2

45
Q

Cardiac Output
1. 120 bpm
2. 160 bpm

i

A

1 > 2

46
Q

Cardiac Output
1. 90 bpm
2. 120 bpm

A

B or C??

47
Q

Cardiac Output
1. 90
2. 160

A

1 > 2

48
Q

Fast Response AP occurs in

A

Contraction and Conducting Fibers of the Heart

49
Q

Slow Response AP occurs in

A

Pacemaker Cells: SA & AVnodes

50
Q

Automaticity
1. Fast Response AP
2. Slow Response AP

A

1 < 2

51
Q

Conduction Velocity
1. Fast Response AP
2. Slow Response AP

A

1 > 2

52
Q

Negativity
1. Fast Response AP
2. Slow Response AP

A

1 > 2

53
Q

Excitability
1. Fast Response AP
2. Slow Response AP

A

1 < 2

54
Q

Purkinje Fibers
1. Fast Response AP
2. Slow Response AP

A

1 > 2

55
Q
  1. K+
  2. Slow Response APs
A

Increase 1 will Increase 2

56
Q
  1. Steepness of Slope
  2. Conduction Velocity
A

Increase in 1 will Increase 2

[PHY2] 2ND SHIFT (6 decks)

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