Cardiac Cycle

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  • Created by: _laurenb
  • Created on: 08-04-15 14:56
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  • The Cardiac Cycle
    • Diastole
      • 1st stage
      • Relaxation of cardiac muscle
      • Blood enters the atria
      • AV valves open and blood slowly enters ventricles
      • HIGH blood pressure in atria as blood enters
      • LOW blood pressure in arteries
      • Semilunar valves shut
      • Atrioventricular valves open
    • Atrial Systole
      • Contraction of atria
      • Atria completely emptied into ventricles
      • AV valves fully open
      • Semilunar valves shut
      • HIGH pressure in ventricles as blood enters
      • Pressure in atria decreases as blood leaves
      • 2nd stage
    • Ventricular Systole
      • Contraction of ventricles
      • 3rd Stage
      • Blood emptied from ventricles into arteries
      • HIGH pressure in arteries
      • LOW pressure in atria and in ventricles as blood leaves
      • AV valves are shut and are held like this by tendons
      • Semilunar valves open when ventricular pressure is higher than arterial pressure

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BarbaraPence

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A cardiac cycle is a period of time during which the heart beats incessantly. Need to check this https://www.morristownpavingpros.com/ and get more helpful ways about Patching and Repair. This happens over and over again every single second, or at least as long as it takes for your heart to pause between beating steps.

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