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Hito-Nervous
Hito-Nervous System
| Question | Answer |
|---|---|
| The nervous system is composed of | the brain, spinal column, and nerves |
| two major divisions of the nervous system | peripheral nervous system (PNS), central nervous system (CNS) |
| central nervous system (CNS) | brain, spinal cord |
| two components of peripheral nervous system (PNS) | the somatic nervous system, the autonomic nervous system |
| two devisions of the autonomic nervous system | the sympathetic system, the parasympathetic system |
| three main parts of a neuron | cell body, dendrite, axon |
| Action potential | An abrupt wave of electrochemical changes traveling down an axon when a neuron becomes depolarized. |
| synapse | The tiny gap between neurons across which they communicate |