Which type of alignment does the current travel during normal electrical conduction in the heart?

During normal electrical conduction in the heart, the direction of current primarily travels downward and to the left. This alignment corresponds to the orientation of the heart's electrical conduction system, specifically, the way depolarization spreads through the atria and into the ventricles.

The electrical impulse originates from the sinoatrial (SA) node, travels through the atria, and reaches the atrioventricular (AV) node, from where it then quickly passes through the bundle of His and down into the ventricles via the right and left bundle branches. The overall vector of this electrical activity is such that it primarily points downward and towards the left ventricle, which is the larger and more muscular chamber of the heart.

Understanding this normal conduction pathway is crucial in interpreting ECG readings, as abnormalities in the direction or timing of this electrical activity can indicate various cardiac conditions. This is why the answer reflects the typical vector direction of electrical impulses during a normal cardiac cycle.