Wenckebach bundle is:

A. Involved in the hea block

B. The fastest conducting pa in the hea

C. An abnormal connection between right atrium and ventricles

D. A bundle that relays impulse from SA node to AV node

Correct Answer: A bundle that relays impulse from SA node to AV node

Description: Internodal tracts conducts impulses from SA node to AV node. Anterior - Bachmann's bundle. Middle - Wenckebach's bundle. Posterior - Thorel's bundle. Bundle of Kent aberrant anomalous path connecting atria to ventricle; bypassing AV node. Characterized by delta wave on ECG. (WPW syndrome).

Category: Physiology

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