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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

24
Q

Duration of
1. S1
2. S2

25
S1 occurs prior to * signals which events * closure of which valve
systole * isovolumetric contration * AV valve
26
S2 occurs prior to * signals which event * closure of which valve
diastole * isovolumetric relaxation * SL valve
27
S3 occurs during
rapid filling phase abnormal in adults
28
1. Exercise 2. Stroke Volume
Increase in 1 will Increase 2
29
Normal Ejection Fraction
60 - 70%
30
1. Heart Failure 2. EF
Increase in 1 will Decrease 2
31
Volume of blood in ventricles at the end of Diastole * Surrogate Marker
Preload * Ennd Diastolic Pressure
32
1. End Diastolic Pressure 2. Preload
Increase in 1 will Increase 2
33
1. Preload 2. Force of Contraction
Increase in 1 will Increase 2
34
Pressure or resistance against which the ventricle must overcome
Afterload
35
1. Hypertension 2. Afterload
Increase in 1 will Increase 2
36
1. Afterload 2. Ejected Blood
Increase in 1 will Decrease 2
37
1. Stenosis of Heart valves 2. Afterload
Increase in 1 will increase 2
38
Active Pressure 1. EDV of 120 2. EDV of 130
1 > 2
39
Active Pressure 1. EDV of 100 2. EDV of 130
1 > 2
40
1. Stretch Length 2. Passive Tension
Increase in 1 will Increase 2
41
1. Stroke Volume 2. Cardiac Output
Increase in 1 will Increase 2
42
1. Afterload 2. Cardiac Output
Increase in 1 will decrease 2
43
1. Heart Rate 2. Stroke Volume
Increase in 1 will Decrease 2
44
1. Diastole Duration 2. SV
Increase in 1 will Increase 2
45
Cardiac Output 1. 120 bpm 2. 160 bpm ## Footnote i
1 > 2
46
Cardiac Output 1. 90 bpm 2. 120 bpm
B or C??
47
Cardiac Output 1. 90 2. 160
1 > 2
48
Fast Response AP occurs in
Contraction and Conducting Fibers of the Heart
49
Slow Response AP occurs in
Pacemaker Cells: SA & AVnodes
50
Automaticity 1. Fast Response AP 2. Slow Response AP
1 < 2
51
Conduction Velocity 1. Fast Response AP 2. Slow Response AP
1 > 2
52
Negativity 1. Fast Response AP 2. Slow Response AP
1 > 2
53
Excitability 1. Fast Response AP 2. Slow Response AP
1 < 2
54
Purkinje Fibers 1. Fast Response AP 2. Slow Response AP
1 > 2
55
1. K+ 2. Slow Response APs
Increase 1 will Increase 2
56
1. Steepness of Slope 2. Conduction Velocity
Increase in 1 will Increase 2

[PHY2] 2ND SHIFT (6 decks)

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