Atrioventricular Node

Atrioventricular Node The structure indicated is the atrioventricular node. The conduction system of the heart is responsible for the synchronised contraction of the atria and ventricles and is comprised of the following main structures: Sinoatrial node Atrioventricular node Atrioventricular bundle of His Right and left bundle branches Purkinje fibres The atrioventricular node is located centrally in the Triangle of Koch, between the atria and ventricles in the infero-posterior portion of the interatrial septum close to the opening of the coronary sinus. The triangle of Koch has the following boundaries: Ostium of coronary sinus Tendon of Todaro Anterior-septal leaflet commissure The …

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