RT Book, Section A1 Hilal-Dandan, Randa A1 Brunton, Laurence L. SR Print(0) ID 1127550656 T1 Anti-Arrhythmic Drugs T2 Goodman and Gilman's Manual of Pharmacology and Therapeutics, 2e YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 9780071769174 LK accessbiomedicalscience.mhmedical.com/content.aspx?aid=1127550656 RD 2024/04/24 AB Cardiac cells undergo depolarization and repolarization to form cardiac action potentials ~60 times/min. The shape and duration of each action potential are determined by the activity of ion channel protein complexes in the membranes of individual cells, and the genes encoding most of these proteins now have been identified.