378. Which artery supplies the AV node? / Pacemaker rates at three different sites / Describe the conduction pathway / Which conduction defects are associated with RCA and LAD occlusion? July 6th, 2008 by reuben in pharmacology/physiology Back Top Tags: card 377. How do pacemaker cells differ from non-impulse generating cells? / What are afterdepolarizations? / The SA node is supplied by what artery? 379. What is the Ashman phenomenon? / Define pre-excitation / Describe 3 mechanisms for dysrhythmia formation Leave a Reply Cancel reply Please post any discussion to the emupdates Reddit page.