Depolarization of human ventricular muscle starts from
Order of depolarization in the heart.
-        First- Left side of the interventricular septum
-        Moves to right across the mid portion of the septum
-        Apex of heart
-        Along ventricular walls to AV groove (Endocardium to epicardium)
-        Last- Posterobasal portion of the left ventricle, pulmonary conus, uppermost portion of the septum.
Posterobasal part of ventricle
Left side of interventricular septum
Uppermost portion of interventricular septum
Basal portion of ventricle