Action potential graph

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Jessica

Reino Unido

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Completar Frases Action potential graphVersión en línea Fill in the blanks por Jessica 1 At rest , the neuron ? s membrane potential is approximately ? 70 mV , with the of the cell negative relative to the . This polarisation is maintained by gradients ( ? and ? ) and selective permeability of the membrane . 2 When a stimulus the membrane to threshold ( ? 55 mV ) , an action potential is triggered . The rising slope of the graph is depolarisation . The membrane potential rises becoming less and reaching a peak of around + mV . The peak corresponds to depolarisation . This phase reflects a change in voltage along the and occurs in an - or - manner . 3 After reaching the peak , the membrane , returning toward the . The falling slope on the graph is . During this phase , the inside of the membrane becomes less , restoring the baseline . The membrane often becomes slightly more than resting , known as , before stabilising back at ? 70 mV . 4 Depolarisations that do not reach are " failed " depolarisations and do not produce a full . Action potentials propagate along the , and periods prevent movement and limit the of firing .