Wenckebach bundle is:
High-Yield Explanation
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).