AV node - causes atria to contract (signal from brain), SA node - causes ventricles to contract (signal from right atrium), purkinje fibers - allows outer walls of ventricles to contract, P wave - electrical impulse across the atria, T wave - end of electrical activity in ventricles , bundle branches - cause lower septum of ventricles to contract  , QRS complex - spread of impulse down septum and ventricle walls, bundle of His - causes septum to contract, electrocardiogram - measures electrical activity in the heart, EKG/ECG - abbreviation for electrocardiogram (English, German),

Conduction of the Heart Terms

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