title: [Development of atrio-ventricular conduction pathways].
abstract: In the embryonic heart of man and mouse, four rings of specialized myocardium are present at the transitions between the different components of the heart tube. Further development produces an adult conducting system which is only composed of certain parts of these rings. The four ring concept not only explains the normal conducting system, but in addition its variations in the hearts of certain animals and in malformed human hearts are easily understood.
mesh_terms: D000818:Animals; D001283:Atrioventricular Node / Q000196:embryology; D006329:Heart Conduction System / Q000196:embryology*; D006801:Humans; D051379:Mice
vernacular_title: Le développement des voies de conduction atrio-ventriculaire.