377. How do pacemaker cells differ from non-impulse generating cells? / What are afterdepolarizations? / The SA node is supplied by what artery? July 6th, 2008 by reuben in pharmacology/physiology Back Top Tags: card 376. Describe the flow of ions across the myocardial cell membrane (oh yes) 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? Leave a Reply Cancel reply Please post any discussion to the emupdates Reddit page.