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Cardiac conduction

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Cardiac conduction

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Review

Valves of the heart: Tricuspid, bicuspidPulmonic, Aortic

Conduction: SA node, AV node, bundle of His, Purkinje fibers

Layers of the heart: epicardium, myocardium, endocardium

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SA (sinoatrial) node and AV (atrioventricular) node are the heart’s pacemakers

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Ion

an atom or molecule where the total number of electrons is not equal to the total number of protons.

Thus has an electrical charge

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Some ions in the body

H+Ca 2+K+Na+

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Depolarization

Inside of the cell becomes less electronegative (less negatively charged)

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