TY - CHAP M1 - Book, Section TI - Cardiac Electrophysiology A1 - Haight, Matthew A1 - Nguyen, Vinh A2 - Freeman, Brian S. A2 - Berger, Jeffrey S. PY - 2014 T2 - Anesthesiology Core Review: Part One Basic Exam AB - Cardiac muscle, like skeletal muscle, contains myosin, actin, tropomyosin, and troponin in various isoforms. Even though cardiac muscle fibers resemble skeletal muscle fibers in that they are striated, they differ in that they form a functional syncytium, which means that all fibers are electrically connected via gap junctions. Pacemaker cells of the electrical conduction system can initiate depolarization, and thus contraction, throughout the myocardium without external neurohormonal control. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/20 UR - accessanesthesiology.mhmedical.com/content.aspx?aid=1102569349 ER -