Question

regarding the conducting system of the heart, the signal for contraction passes from the sinoatrial node to the atrioventricular node via which of the following?

Explanation:

The conducting system of the heart has a specific pathway for the contraction signal. The sinoatrial node (SA node) is the natural pacemaker. The signal from the SA node travels to the atrioventricular node (AV node) via the internodal pathways. The AV bundle (of His) is involved in transmitting the signal from the AV node to the ventricles. Purkinje fibers spread the signal throughout the ventricular myocardium for contraction. Cardiac pacemaker cells are mainly in the SA node. So, the correct pathway from SA node to AV node is via internodal pathways.

Answer:

Internodal pathways