<prompt> The right coronary artery supplies all of the following parts of the conducting system in the heart except -SA nodeAV nodeAV bundleRight bundle branch  <response>: Area supplied by right coronary artery- SA node in 65- Conducting system AV bundle, bundle of His, part of left bundle branch except RBB and part of left branch of AV bundle.- Posterior 13rd of interventricular septum- Right ventricle except part adjoining anterior interventricular groove and small part of left ventricle adjoining posterior interventricular groove. Area supplied by left coronary artery- Left atrium- Left ventricle including apex- Part of right ventricle adjoining anterior interventricular groove.- Anterior 23rd of interventricular septum- RBB, LBB- SA node in 35 