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SlideshowReport

Use of squid giant axons for studies of neural transmission

Description
Electrodes attached to a voltmeter record the potential across the axonal membrane.

At the resting axon ion concentrations shown here, the voltmeter would read about 60 mV.

If the axon is stimulated at point A by a depolarizing pulse, the traveling membrane potential will shortly pass point B, where it can be recorded.
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