2.84 understand that stimulation of receptors in the sense organs sends electrical impulses along nerves into and out of the central nervous system, resulting in rapid responses

2.84 understand that stimulation of receptors in the sense organs sends electrical impulses along nerves into and out of the central nervous system, resulting in rapid responses


the impulses that travel along a neuron are not an electrical current they are a result of the movement of ions out an in of the neurone. these impulses can travel at speeds between 10 and 100 m/s which is fast enough to produce a rapid response.