| A | B |
|---|
| Neurons | (nerve cell)cell that carries information |
| Nerve impulse | message that a neuron carries |
| dendrite | carries impulses toward the cell body(short extension cord) |
| Axon | carries impulses away from the nerve body |
| interneuron | a neuron that carries nerve impulses form one to another (talking) |
| synapse | tiny space between the axon of a neuron and a dendrite from another |
| cell body | part that holds the nuecleus |
| Central Nervous system | (cns) is composed of the brain and the spinal cord. this is surround by bone-skull and vertebrae |
| sensory neurons | has a long dendrite and short axon. carries messages form sensory receptors to the central nervous system |
| things that the nervous system does | receive sensory input from internal and external environments. intergrate the imput. respond the stimulis |
| cocaine | from the plant Erthoxylon coca |
| heroin | from opium |
| marijuana | material from the indian shem plant |
