| A | B |
|---|
| functions of the nervous system | receives information about what is happening inside and outside the body, and directs the body's reaction |
| structure of a neuron | 3 parts- dendrites, cell body, and axon |
| types of neurons | sensory, interneurons, motor |
| stimulus | anything in the environment that causes an organism to react |
| response | what a body does in reaction to a stimulus |
| neuron | nerve cell |
| nerve impulse | message a nerve carries |
| dendrite | part of a neuron- it gathers info and sends it to the cell body |
| axon | part of a neuron- it sends a nerve impulse from the cell body to the next nerve fiber |
| nerve | also called a neuron; carry information |
| sensory neuron | picks up (notices) stimuli |
| interneuron | a neuron in the brain or spinal cord that passes info from sensory neurons to motor neurons |
| motor neuron | sends a nerve impulse to a muscle or gland |
| synapse | the space or gap between the axon of one neuron and the dendrites of the next |
| parts of the nervous system | brain, spinal cord, sensory nerves, interneurons, motor nerves |
