The ligament of Marshall: A historical perspective

The unraveling of the cardiac conduction system of the heart by master physiologists such as Purkinje, His, Tawara, Keith, Flack, 1 Silverman M.E. Grove D. Upshaw Jr., C.B. Why does the heart beat? The discovery of the electrical system of the heart. Circulation. 2006; 113: 2775-2781 Crossref PubMed Scopus (63) Google Scholar and many other contributors served as the basis of our understanding of the marvel of this electromechanical organ that sustains our daily lives for a lifetime. The initial studies delineating the His–Purkinje system/atrioventricular (AV) node encouraged subsequent studies searching for a similar insulated ventricular conduction system that was separated from regular working atrial myocardium.