THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The bundle of His is also called the atrioventricular bundle. It is a branch of fibers (nerve cells) that extends from your AV node. This fiber bundle receives the electrical signal from the AV node and carries it to the Purkinje fibers.

Detailed explanation-2: -[1] After electrical impulse is sent from the sinoatrial (SA) node to the atrioventricular (AV) node, the bundle of His quickly transmits the impulse to the left and right bundle branches and into the ventricles, resulting in a synchronized contraction of the ventricles.

Detailed explanation-3: -The middle (or Wenckebach’s pathway) extends from the superior part of the sinoatrial node, runs posteriorly to the superior vena cava, then descends within the atrial septum, and may join the anterior bundle as it enters the atrioventricular node.