Cardiac conduction system and EKG's

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Last updated 1:33 PM on 4/6/26
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15 Terms

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SA node

pacemaker of the heart

<p>pacemaker of the heart</p>
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AV node

relays electrical impulses from atria into ventricles

<p>relays electrical impulses from atria into ventricles</p>
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AV bundle (bundle of His)

located in the septum of the ventricle

<p>located in the septum of the ventricle</p>
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Purkinje fibers

fibers in the ventricles that transmit impulses to the right and left ventricles, causing them to contract

<p>fibers in the ventricles that transmit impulses to the right and left ventricles, causing them to contract</p>
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P wave

part of the EKG corresponding to the atria contracting

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QRS complex

the part of an ECG that reflects conduction of an electrical impulse through the ventricles, causing them to contract

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T wave

ventricular repolarization (recovery seen on EKG)

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sinus

normal

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brady-

abnormally slow

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tachy-

fast, rapid

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-cardia

heart

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fibrillation

uncontrolled quivering or twitching of the heart muscle

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diastole

Relaxation of the heart

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systole

Contraction of the heart

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asystole

absence of contractions of the heart; flatline