Triangle of Koch is the landmark for :: (A) SA node, (B) Bundle of His, (C) AV node, (D) Purkinje fibres
Answer is C. Triangle of KochTriangular area in right atrium- Marks the site of AV NODEBoundaries- Anterior : Base of septal leaflet of tricuspid valve- Posterior : Anteromedial margin of opening of coronary sinus- Superiorly : Tendon of Todaro