AV bundle (bundle of His)
only electrical connection between atria and ventricles (40-60bpm)
The AV bundle, also known as the bundle of His, is a collection of specialized cardiac muscle fibers that conduct the electrical impulse from the AV node to the ventricles of the heart. The AV bundle is a continuation of the AV node and is located in the interventricular septum. It splits into the left and right bundle branches, which further divide into smaller fibers called Purkinje fibers. The Purkinje fibers distribute the electrical signal to the ventricles, causing them to contract and pump blood out of the heart. The AV bundle plays a critical role in coordinating the electrical activity of the heart and ensuring efficient blood flow.
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