Bundle branches
conduct impulses to the left and right ventricles (interventricular septum) 20-40bpm
The bundle branches are a part of the electrical conduction system of the heart that arise from the bundle of His and extend through the interventricular septum to the right and left ventricles. There are two bundle branches: the left bundle branch and the right bundle branch. The left bundle branch further divides into the anterior and posterior fascicles. The bundle branches are responsible for transmitting the electrical impulses from the atrioventricular node to the ventricles, which causes the ventricles to contract and pump blood out of the heart.
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