<prompt> The right coronary aery supplies all of the following pas of the conducting system in the hea except:SA NodeAV NodeAV BundleRight Bundle branch  <response>: Answer is D Right bundle branch Right bundle is supplied by the Left coronary aery. Right coronary aery supplies the SA node in 65 cases, AV node, AV bundle or Bundle of His and pa of left bundle branchLBB Left cronoary aery supplies the right bundle branch RBB, pa of LBB and sometimes the SA node in 35 cases, 