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greater the stretch of myocardium, the stronger the ventrical contraction(heart beat)
the heart beat begins: electrical impulse initiates the SA node to fire-
SA node sends the stimulus to the AV node through internodal tracts-
AV node will initiate electrical stimulus if SA node malfunctions at a rate of
40-60 bpm, stimulus sent to bundles of his from here-
bundle of his branches off into the lt and rt bundle branches-
feed the ventricles rt and lt and bachmann's bundle down to
during the electrical conduction, electrical movement of cells is from polarization to
once contraction occurs, the charges inside the cells
returns to normal until the next stimulus is sent. this process is called repolarization
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