Tim Taylor is a senior writer at Innerbody Research focusing on human anatomy and physiology. Tim earned both his Bachelor of Science degree in Biology and his Master's degree in Teaching from the University of Pittsburgh.
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The phrase bundle branches refers to the three branches of the bundle of His, a grouping of heart muscle cells which are responsible for transmitting the electrical impulses from the heart's AV node to the top of its fascicular branches; in turn, this transmits the electrical impulses to the heart's Purkinje fibers, which lead to the regular contraction of the cardiac muscles in the left and right ventricles.
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