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Sistem Cardiovascular - Coggle Diagram

- - - - pacemaker cells have unstable resting membrane potential
      - SA Node : the fastest pace maker sets the rate of beating
    - - determined by autonomic system
      - SNS : increase HR, PNS decrease HR
    - - ECG : sum of electrical activity of the entire heart
      - P waves depict atrial depolarization
      - QRS complex depicts venticular depolarization
      - T waves: ventricular repolarization
    - - each cardiac cycle involves electrical activation of the atria and ventricles in the right & left chambers
  - - - systole
        
        ventricular contraction & ejection
        
        the beginning coincides with the first heart sound, ends with the second heart sound
      - diastole
        
        ventricle relaxation & filling
        
        begins with the second heart sound, ends with the first heart sound
    - - electrical activation of the atria then of the ventricles
    - - volume of blood ejected with each beat
    - - sum of the stroke volume ejected in one minute