Which sequence correctly represents the conduction pathway of electrical impulses in the heart?
Correct: C
The sinoatrial (SA) node acts as the pacemaker, initiating the impulse. The electrical signal then travels to the atrioventricular (AV) node, which delays the impulse briefly. From there, the impulse moves through the bundle of His, splits into the right and left bundle branches, and finally reaches the Purkinje fibers for rapid ventricular depolarization.