Resting potential

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Neurone cell membranes are polarised at rest

·         In a neurone’s resting state (when it’s not being stimulated), the outside of the membrane is positively charged compared to the inside. This is because there are more positive ions outside the cell than inside. This is because there are more positive ions outside the cell than inside.

·         So the membrane is polarised – there’s a difference in voltage across it.

·         The difference in voltage across the membrane when it’s at rest is called its resting potential – it’s about -70mV.

·         The resting potential is created and

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