Answer
Bundle of His.
Work Step by Step
Atrioventricular bundle
- is ashort bundle of modified myocardial fibres which
begins from the anteroinferior end of the AV node.
- runs in the posterior margin of the membranous
part of the interventricular septum.
- divides into 2 branches : right bundle branch ( RBB )
& left bundle branch ( LBB ).
- also called : "bundle of His."