Summary About Conduction System Of The Heart

Summary About Electrical conduction system of the heart

Summary About Electrical conduction system of the heart

From the diagram above, you can see that the electrical signal in the heart

  • begins at the SA Node

  • stimulates the atria to contract

  • travels to the AV Node

  • travels to the Bundle of His

  • travels through the Purkinje network

  • stimulates the ventricles to contract

Note also that

  • when the ventricles are being stimulated to contract, the atria are repolarizing

  • the ventricles are repolarized during the T wave

  • the normal pacemaker of the heart is the SA node

The location of the SA Node, AV Node, Bundle of His and Purkinje fibers are shown in the diagram below.

The location of the SA Node

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