# Structure and functioning of a nerve

> Nerves carry signals to and from all parts of the body. A nerve is made up of many neurons (nerve cells), which can be sensory or motor neurons. This section covers the functions of sensory and…

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## More in RESPONDING TO THE ENVIRONMENT (Humans)

- [Autonomic nervous system](https://www.hlayiso.com/grade-12/life-sciences/notes/responding-to-the-environment-humans/autonomic-nervous-system) — Previous section
- [The simple reflex arc](https://www.hlayiso.com/grade-12/life-sciences/notes/responding-to-the-environment-humans/the-simple-reflex-arc) — Next section
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