<prompt> AV node is situated in ?Opening of SVCInterventricular septumKochs triangleNone  <response>: Ans. is c i.e., Kochs triangle AV node is situated in triangular pa triangle of Koch in the lower pa of interatrial septum. Triangle of Koch is landmark for AV node with its transition zone. It is bounded by tendon of todaro superiorly, tricuspid valve septal leaflet inferiorly and coronary sinus orifice basally. Conducting system Location in hea SA node Upper end of crista terminalis, near opening of SVC AV node Triangle of Kochs near interatrial septum Bundle of his Membranous pa of interventricular septum RBB Right surface of interventricular septum LBB Left surface of interventricular septum 