Dense collagenous sheath of purkinje myocyte of atrial branch of anterior internodal tract
dense collagenous sheath of purkinje myocyte of atrial branch of anterior internodal tract
Dense collagenous sheath of purkinje myocyte of atrial branch of anterior internodal tract
dense collagenous sheath of purkinje myocyte of atrial branch of anterior internodal tract