Sympathetic stimulation of the heart increases action potential conduction velocity through the AV node.

Question

Quizplus · Accepted Answer

Sympathetic stimulation increases the release of norepinephrine, which activates beta-adrenergic receptors in the heart. This leads to an increase in calcium influx into cells and an increase in the activity of the Na+/K+ pump, which collectively increase the conduction velocity through the AV node.

Sympathetic Stimulation of the Heart Increases Action Potential Conduction Velocity