1. The Nerve Impulse
Laurel McKay
Period 1

2. 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)