Basics: Difference between revisions
→The ECG is a sum of the action potentials from millions of cardiomyocytes
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=The ECG is a sum of the action potentials from millions of cardiomyocytes= | =The ECG is a sum of the action potentials from millions of cardiomyocytes= | ||
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!<flash>file=Single_cardiomyocyte.swf|width=382|height=315|quality=best|align=right||</flash> | |||
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| Het filmpje toont het samentrekken van een individuele (konijnen)hartcel. De glazen electrode meet de electrische spanning in de hartcel (volgens de [[w:Patch_clamp|patch-clamp methode]]). Het electrisch signaal wordt in blauw uitgeschreven en toont dus een individuele actiepotentiaal. ''Met dank aan Arie Verkerk en Antoni van Ginneken''. | |||
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[[Image:Hart_cells_en.png|thumb|The heart consists of approximately 300 trillion cells]] | [[Image:Hart_cells_en.png|thumb|The heart consists of approximately 300 trillion cells]] | ||
[[Image:cells_in_rest_en.png|thumb|In rest the heart cells are negatively charged. Trough the depolarization by surrounding cells they become positively charged and they contract.]] | [[Image:cells_in_rest_en.png|thumb|In rest the heart cells are negatively charged. Trough the depolarization by surrounding cells they become positively charged and they contract.]] | ||