TY - CHAP M1 - Book, Section TI - Myocardial Contractility A1 - Ionescu, Adrian M. A1 - Suyderhoud, Johan P. A2 - Freeman, Brian S. A2 - Berger, Jeffrey S. PY - 2014 T2 - Anesthesiology Core Review: Part One Basic Exam AB - The heart is made up of striated muscle of both atria and ventricles, along with the pacemaker and action-potential conducting tissue. The pacemaker cells of the myocardium have a unique, self-excitatory property, which allows myocardial contractility to occur independently of sympathetic or parasympathetic nervous system input. The intercalated discs allow the fast, uniform, and sequential transmission of electrical activity (action potentials) between myocytes to generate an effective cardiac output to perfuse vital tissue. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/20 UR - accessanesthesiology.mhmedical.com/content.aspx?aid=1102569399 ER -