Nervous+System+Notes+PK

The white nerve is actually a bundle of many nerves spinal cord- biggest cord of nerves in your body - branches of smaller nerves branch off of the spinal cord

pain is a chemical reaction to damage

the nerve cell is very very long

action potential: 1. sodium moves in (positive charge), potassium moves out (positive change) so charge goes back to negative *lightening fast*

cocaine: mimics dopamine