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
Answer is D. 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).