| A | B |
|---|
| action potential | electrical impulse that send signals around body |
| resting potential | when neuron is at rest |
| depolarization | when neuron become less negative compared to outside cell |
| threshold | the point at which depolarization reaches when neuron WILL fire |
| refractory period | after cell fires, it must rest and cannot fire for short time |
| "spike" or "impulse" | electrical explosion when action potential happens |
| all-or-nothing principle | a neuron either fires or it doesn't (no half firing) |
| neurotransmitter | chemical molecules that get released during action potential |
