Cable Properties and Conduction of the Action Potential

Excitability, Sources, and Sinks
  • Morton F. Arnsdorf
Part of the Developments in Cardiovascular Medicine book series (DICM, volume 34)


Cardiac excitability has a certain intuitive meaning suggesting the ease with which cardiac cells undergo individual and sequential regenerative depolarization and repolarization, communicate with each other, and propagate electrical activity in a normal or abnormal manner. The heartbeat arises from a highly organized control of ionic flow through channels in the cardiac membrane, the myoplasm, the gap junctions between cells, and the extracellular space. These bioelectrical events are regulated within very tight limits to allow the coordinated propagation of excitation and contraction of the heart that is necessary for an efficient cardiac output. Abnormalities in the regulatory mechanisms often accompany cardiac disease.


Conduction Velocity Purkinje Fiber Cable Equation Sodium System Cardiac Purkinje Fiber 
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© Springer Science+Business Media Dordrecht 1984

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  • Morton F. Arnsdorf

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