cardiac cycle

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Last updated 12:06 PM on 7/24/26
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23 Terms

1
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what’s the content of cardiac cycle?

diastole

systole

2
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this is also known as ventricular relaxation?

diastole

3
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this is also known as ventricular contraction?

systole

4
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what’s the content of diastole?

period of rapid filling of ventriles

5
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what period is this?

  • first third of diastole, 75% of blood goes from atrial to ventricles (this is a passive process)

  • in middle third of diastole, there is continues blood flow from atrial to ventricles

  • in the last third of diastole, 25% of blood goes from atrial to the ventricles (atrial kick or atrial systole)

  • **open ang AV Valves dito while SL Valves are closed

  1. PERIOD OF RAPID FILLING OF VENTRICLES (S3)

6
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what period is this?

  • first third of diastole, 75% of blood goes from atrial to ventricles (this is a passive process)

  1. PERIOD OF RAPID FILLING OF VENTRICLES (S3)

7
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what period is this?

  • in middle third of diastole, there is continues blood flow from atrial to ventricles

  1. PERIOD OF RAPID FILLING OF VENTRICLES (S3)

8
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what period is this?

  • in the last third of diastole, 25% of blood goes from atrial to the ventricles (atrial kick or atrial systole)

  1. PERIOD OF RAPID FILLING OF VENTRICLES (S3)

9
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what period is this?

  • **open ang AV Valves dito while SL Valves are closed

  1. PERIOD OF RAPID FILLING OF VENTRICLES (S3)

10
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what are the contents of systole?

  1. PERIOD OF ISOVOLUMIC CONTRACTION 

  2. PERIOD OF EJECTION

  3. PERIOD OF ISOVOLUMIC RELAXATION

11
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what period is this?

  • blood is already in the ventricles

  • increased ventricular pressure

  • av valves closed and sl calves closed

  1. PERIOD OF ISOVOLUMIC CONTRACTION 

12
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what period is this?

  • blood is already in the ventricles

  1. PERIOD OF ISOVOLUMIC CONTRACTION 

13
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what period is this?

  • increased ventricular pressure

  1. PERIOD OF ISOVOLUMIC CONTRACTION 

14
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what period is this?

  • av valves closed and sl calves closed

  1. PERIOD OF ISOVOLUMIC CONTRACTION 

15
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what period is this?

  • SL Valves open, AV Valves closed

  • afterload: ventricular force na need to open SL Valves

    • RV: 8mmhg

    • LV: 80mmhg

    • need malagpasan to para maopen yung sl(??) valves

  • divided to 2 sections

    • 1st third of ejection: 70% of blood goes to the ventricles

    • last to third of ejection: 30% of blood goes to the ventricles

  1. PERIOD OF EJECTION

16
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what period is this?

  • SL Valves open, AV Valves closed

17
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  • whats the afterload ventricular force of RV?

  • RV: 8mmhg

18
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  • whats the afterload ventricular force of LV?

  • LV: 80mmhg

19
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PERIOD OF EJECTION IS divided to 2 sections. what are these?

  • 1st third of ejection: 70% of blood goes to the ventricles

  • last to third of ejection: 30% of blood goes to the ventricles

20
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what period is this?

  • blood is in the blood vessels (specifically: pulmonary artery and aorta)

  • decreased ventricular pressure 

  • sl valves closed, av valves closed


  1. PERIOD OF ISOVOLUMIC RELAXATION

21
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what period is this?

  • blood is in the blood vessels (specifically: pulmonary artery and aorta)

  1. PERIOD OF ISOVOLUMIC RELAXATION

22
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what period is this?

  • decreased ventricular pressure 

  1. PERIOD OF ISOVOLUMIC RELAXATION

23
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what period is this?

  • sl valves closed, av valves closed

  1. PERIOD OF ISOVOLUMIC RELAXATION