Which component carries the impulse from the AV node to the ventricles?

Which component carries the impulse from the AV node to the ventricles?

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

Answer: (C)

The question targets how the electrical impulse travels from the AV node into the ventricles. After the impulse reaches the AV node, it moves into a specialized conduction pathway called the bundle of His. This AV bundle runs through the interventricular septum and immediately carries the signal to the left and right bundle branches, which then distribute it via Purkinje fibers to the ventricular muscle. This arrangement ensures rapid, synchronized activation of the ventricles. The Purkinje fibers are downstream of the bundle of His, delivering the impulse to the heart muscle, but the direct conduit from the AV node to the ventricles is the bundle of His.

The question targets how the electrical impulse travels from the AV node into the ventricles. After the impulse reaches the AV node, it moves into a specialized conduction pathway called the bundle of His. This AV bundle runs through the interventricular septum and immediately carries the signal to the left and right bundle branches, which then distribute it via Purkinje fibers to the ventricular muscle. This arrangement ensures rapid, synchronized activation of the ventricles. The Purkinje fibers are downstream of the bundle of His, delivering the impulse to the heart muscle, but the direct conduit from the AV node to the ventricles is the bundle of His.