Which conduction pathway carries impulses from the AV node to the ventricles?

Which conduction pathway carries impulses from the AV node to the ventricles?

• A. AV node
• B. Purkinje fibers
• C. Sinoatrial node
• D. Bundle of His

Answer: (D)

The signal from the AV node to the ventricles is carried by the Bundle of His. This conduit takes impulses from the AV node into the interventricular septum and then divides into right and left bundle branches, distributing the impulse to the Purkinje fibers that stimulate the ventricular muscle. The Purkinje fibers are part of the ventricular network and rely on the Bundle of His to deliver the impulse; they do not directly connect to the AV node. The AV node’s role is to slow conduction between atrial and ventricular tissue, and the Sinoatrial node is the atrial pacemaker, not the pathway to the ventricles.

The signal from the AV node to the ventricles is carried by the Bundle of His. This conduit takes impulses from the AV node into the interventricular septum and then divides into right and left bundle branches, distributing the impulse to the Purkinje fibers that stimulate the ventricular muscle. The Purkinje fibers are part of the ventricular network and rely on the Bundle of His to deliver the impulse; they do not directly connect to the AV node. The AV node’s role is to slow conduction between atrial and ventricular tissue, and the Sinoatrial node is the atrial pacemaker, not the pathway to the ventricles.