1.

Name In a sequence the specialised cardiac muscle fibres responsible for conduction of heart beat. Also mention their location in the heart.

Answer»

Heart conducting system contains Sino-atrial node, Atrio-ventricular node, AV-bundle and Purkinje fibres.

  • SA node is situated in the upper lateral wall of the right atrium. 
  • AV node is located in the posterior part of the interatrial septum.
  • The AV bundle branches into two and enter left and right ventricles.
  • Purkinje fibres are located throughout the ventricular wall.


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