Which structure conducts impulses after the AV node to coordinate ventricular contraction?

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Multiple Choice

Which structure conducts impulses after the AV node to coordinate ventricular contraction?

Explanation:
After the AV node, the impulse travels through the Bundle of His (AV bundle). This is the conduit that carries the signal from the AV node into the ventricles, where it splits into right and left bundle branches and then reaches the Purkinje fibers to rapidly distribute the impulse to ventricular myocardium. This sequence ensures the ventricles contract in a coordinated, timely manner. While the Purkinje fibers also conduct, they are downstream of the Bundle of His, making the Bundle of His the key structure immediately after the AV node.

After the AV node, the impulse travels through the Bundle of His (AV bundle). This is the conduit that carries the signal from the AV node into the ventricles, where it splits into right and left bundle branches and then reaches the Purkinje fibers to rapidly distribute the impulse to ventricular myocardium. This sequence ensures the ventricles contract in a coordinated, timely manner. While the Purkinje fibers also conduct, they are downstream of the Bundle of His, making the Bundle of His the key structure immediately after the AV node.

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