[Individual and age-related variability of the arteries to the atrioventricular node in the human heart].

Investigation was performed on 501 preparations of the hearts of people of various age without the pathology of cardiovascular system. Complex of morphological methods, including morphometry was used in the work. Individual variability of the atrioventricular node artery was established to be characterized by diverse diameter and length (within limits, determined for every age), direction, branching characteristics, zones of distribution, and different participation in blood supply of the atrioventricular region of conducting system of the heart.