[Topography of the elements of the heart conduction system in the human]

In 112 preparations of hearts from persons at the age of 18-87 years by means of the preparation method (77 hearts) and in histograms stained after Van Gieson, Mallory, Heidenhain and Masson (35 hearts), certain new data on the cardiac conduction system (CCS) have been obtained. A number of fasciculi connected with the sinuatrial and atrioventricular nodes have been revealed. The atrioventricular part of the CCS, as a more ancient one, is characterized by a more constant structure and topography. The sinuatrial part of the CCS, being phylogenetically younger, has a high degree of individual anatomical changeability.