Nervous+system+notes+EP

The spinal cord is the biggest nerve in the body. its just a cord or a rope where all the nerve cells are lined up against each other. bundles of cells go to parts of your body from the spinal cord. each branch goes to a certain place in the body such as arms, legs. brain is the central nervous system. you get signals form the brain. neurons feel action potential - sodium channels. sodium moves in (positive) and potassium moves out (positive)