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→The electric discharge of the heart
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==The electric discharge of the heart== | ==The electric discharge of the heart== | ||
[[Image:conduction_system_en.png|thumb]] | [[Image:conduction_system_en.png|thumb]] | ||
<flash>file=Normal_SR.swf|width=300|height=400|quality=best|align=right||</flash> | |||
'''The sinal node (SA node) contains pacemakercells which determine the heart frequency.''' | '''The sinal node (SA node) contains pacemakercells which determine the heart frequency.''' | ||
'''First the [[heart|atria]] depolarise and contract, after that the [[heart|ventricles]]''' | '''First the [[heart|atria]] depolarise and contract, after that the [[heart|ventricles]]''' | ||