part of part of membrane repolarization membrane repolarization during cardiac muscle cell action potential AV node cell action potential membrane repolarization during AV node cell action potential 2011-11-16T11:43:38Z The process in which ions are transported across a membrane such that the AV node cardiac muscle cell membrane potential changes in the direction from the positive membrane potential at the peak of the action potential towards the negative resting potential. membrane repolarization involved in regulation of AV node cardiac muscle cell action potential GO:0086049 biological_process membrane repolarization involved in regulation of atrioventricular node cardiac muscle cell action potential