In normal sinus rhythm, the impulse reaches the ventricles via which conducting network?

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Multiple Choice

In normal sinus rhythm, the impulse reaches the ventricles via which conducting network?

The ventricles are activated by the His-Purkinje system, which provides rapid, coordinated conduction to the ventricular myocardium. In normal sinus rhythm, the impulse starts in the SA node, travels through the atria to the AV node (where a brief delay occurs to allow filling), then moves down the bundle of His and into the Purkinje fibers. The Purkinje network distributes the impulse quickly to the ventricles, producing near-simultaneous ventricular depolarization and contraction. The AV node is the delaying relay between atria and ventricles, and the bundle of His is the passageway from AV node to Purkinje fibers.

The ventricles are activated by the His-Purkinje system, which provides rapid, coordinated conduction to the ventricular myocardium. In normal sinus rhythm, the impulse starts in the SA node, travels through the atria to the AV node (where a brief delay occurs to allow filling), then moves down the bundle of His and into the Purkinje fibers. The Purkinje network distributes the impulse quickly to the ventricles, producing near-simultaneous ventricular depolarization and contraction. The AV node is the delaying relay between atria and ventricles, and the bundle of His is the passageway from AV node to Purkinje fibers.

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