The Nerve Impulse Laurel McKay 9-24-07 Period 1.

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The Nerve Impulse Laurel McKay 9-24-07 Period 1

Nerve Impulse Resting potential: the electrical charge of a neuron at rest Once the electrical charge reaches minus 50 millivolts the neuron will be ready to fire which leads to… Action Potential: the nerve impulse/ sending the message During action potential the axon membrane is pierced by ion channels, then sodium ions rush into the axon After the impulse there is a negative after-potential (a drop in electrical charge below the resting potential)