Autorhythmicity in the heart (the ability to spontaneously generate electrical impulses) is primarily the responsibility of which structure?

Which structure is the primary pacemaker of the heart under normal resting conditions?

In the electrical conduction system of the heart, the normal pacemaker of the heart is the:

In the electrical conduction system of the heart, which sequence correctly describes the pathway that carries cardiac impulses from initiation to ventricular conduction?

Which structure is the normal pacemaker of the heart, initiating the electrical impulse that sets the rhythm under normal conditions?

Which structure is considered the primary pacemaker of the heart under normal physiological conditions?

In the electrical conduction system of the heart, which structure normally serves as the pacemaker by initiating the heartbeat?

In the electrical conduction system of the heart, which structure is considered the primary pacemaker that normally initiates each heartbeat?

In the electrical conduction system of the heart, which structure is known as the pacemaker of the heart?