VARIABILITY OF ARTERIES BRANCHING AS A FORM OF TRANSFORMATION OF EMBRYOLOGICAL PATTERN

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According to the data of the literature and our investigation data, variability of arteries branching is revealed in 15-47% of cases. The classical variant of the coeliac trunk branching (branching into 3 branches), according to the nomenclature method of accounting for branches, is revealed in 72-98% of cases, according to the quantitative method of accounting - in 27-66% of cases. The classical version of the divergence of the branches from the aortic arch is revealed in 64-84% of cases. Some arteries, such as the internal carotid artery (in the neck), the common carotid as well as the external iliac arteries, according to the concept of branching of large paired arteries, as a rule, have no branches and any branching variability. We consider introducing the coefficient of arteries branching, which is calculated according to the usual scheme, for comparative characteristics of branching of different arteries. Arterial branching is genetically determined, but it is transformed into final variations according to the structural features of this region and the features of hemodynamic in the primary arterial vessels.