Which of the following is false regarding coronary circulation ?
Right coronary aery supplies (i) SA node (in 65%), (ii) whole conducting system (AV bundle, bundle of his, pa of left bundle branch) except RBB and pa of left branch of AV bundle, (iii) posterior pa of ventricular septum, (iv) most of right ventricle except small pa adjoining anterior interventricular groove and small pa of left ventricle adjoining posterior interventricular groove.Left coronary aery supplies (i) most of the left atrium, (ii) most of the left ventricle including apex, (iii) small pa of right ventricle odjoining anterior interventricular septum, (iv) anterior 2/3 of ventricular septum, (v) RBB, LBB and (vi) SA node in 35% of cases.
Anterior 2/3 of septum is supplied by LCA
Posterior 1/3 of septum is supplied by RCA
Right bundle branch is supplied by RCA
Left bundle branch is supplied by LCA