Cards (20)

  • Once large 'cell' having many nuclei that are not separated by cell membrane?
    Syncytium
  • Many cells functioning as one?
    Functional syncytium
  • Type of cardiac myocyte cells that set heart's rhythm?
    pacemaker cells
  • Type of cardiac myocyte cells that transit rhythm throughout the heart?
    conducting cells
  • Cardiomyocytes are linked by low resistance pathways associated with gap junctions at the intercalated discs.
  • What conduct impulse from SA node to AV node?
    internodal bundles
  • The ___ means that ventricles contract after atria to permit longer and more effective ventricular filling. ?
    electrical delay
  • Action potential conducted very slowly in AV node (0.05 m/s)
  • Order of depolarisation of the ventricular wall?
    septum, apex, atrioventricular groove
  • Purkinjee fibres transmit impulse rapidly to the main mass of the ventricles.
  • Configuration of electrodes?
    lead
  • Bottom one or two lines in ECG, spanning to the whole 10 seconds of a specific lead?
    rhythm strip
  • Depolarisation of the atria in response to SA node triggering?
    P wave
  • Depolarisation of ventricles, triggers main pumping contractions?
    QRS complex
  • Ventricular repolarisation?
    T wave
  • Delay of AV node to allow filling of ventricles?
    PR segment
  • Beginning of ventricle repolarisation, should be flat?
    ST segment
  • Large (deep) Q waves are a sign of what?
    dead tissue (old MI)
  • When the heart rhythm is generated from the Sino-atrial node?
    sinus rhythm
  • When the SA node is beating too quickly?
    Sinus tachycardia