Which sequence does the electrical stimulus of the cardiac cycle follow?

Question

Quizplus · Accepted Answer

Specialized cells in the SA node near the superior vena cava initiate an electrical impulse.The current flows in an orderly sequence,first across the atria to the AV node low in the atrial septum.There it is delayed slightly so that the atria have time to contract before the ventricles are stimulated.Then the impulse travels to the bundle of His,the right and left bundle branches,and then through the ventricles.

Which Sequence Does the Electrical Stimulus of the Cardiac Cycle