The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is
Correct answer: (c) SA node; AV node; AV bundle; Purkinje fibre
∙ The sinoatrial node (SAN) is present near the opening of the superior vena cava and the AV node is found near the interauricular septum near the tricuspid valve.
∙ Bundle of HIS is a bundle of muscle fibres that begins from atrio-ventricular node and extends to the interventricular septum.
∙ The bundle of HIS consists of branches of fibres running along the wall of the ventricle known as Purkinje fibres.
∙ All these together form a system which creates an impulse and conducts it to every part of the heart.