The aim of study was to develop a comprehensive assessment of the central and peripheral parts of the nervous system with a determination of degree of severity of alterative changes in comparison with the condition of myocardial contractile apparatus. Own observations on modern methods of morphological study of the cardiac conduction system in the sudden death of young people are presented. Particular attention is paid to the technique of isolating and coloring the nervous structures of sympathetic and parasympathetic parts of the autonomic nervous system, including the medulla oblongata, sinus-atrial and atrial-ventricular nodes, atrioventricular bundle (the His bundle), Purkinje fibers. The features of morphological changes in the nerve structures of the heart, due to various etiological factors are highlighted.
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