FMA definition : Subdivision of conducting systemof heart which consists of the anterior, middle and
posterior internodal tracts beneath the endocardium of interatrial septum and above
the attachment of the septal leaflet of tricuspid valve.;
Subdivision of conducting systemof heart which consists of the anterior, middle and
posterior internodal tracts beneath the endocardium of interatrial septum and above
the attachment of the septal leaflet of tricuspid valve.