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10 terms

Conduction System

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sinoatrial node
where electrical impulse starts; natural pacemaker
conduction system
controls the heart beat
P wave
contraction of the atria
QRS complex
electrical wave that shows the contraction of the ventricles
T wave
a wave on the cardiac cycle that indicates ventricular relaxation
bundle of His
bundle of fibers that goes along the septum to the apex
atrioventricular node
bundle of electrical fibers where electrical signals are sent then relayed to the Bundle of His
natural pacemaker
SA node
purkinje fibers
causes ventricles to contract
electrocardiogram
picture of the electrical system of the heart