[The anatomy of the interventricular septum of the heart and the anatomical nomenclature].

With the aim to study interrelations of the interventricular septum (IVS) and systematization of their definitions, 151 preparations of hearts of persons died from causes having no connections with cardio-vascular diseases have been studied. The IVS consists of inflow and outflow septa. The inflow septum includes the sinusal (posterior) and trabecular septa, the outflow one--the anterior and conoid septa. The distal part of the anterior and conoid septa form the infundibular septum. From the side of the right ventricle the conoid septum and bulboventricular fold form a supraventricular crest--muscular torus, separating its inflow and outflow parts. From the side of the left ventricle the supraventricular crest is seen as a muscular bar, forming the basal medial wall.