# The simple reflex arc

> A reflex action is a fast, automatic response to a stimulus that protects the body. A reflex arc is the pathway that the nerve impulse follows during a reflex action. This section covers the…

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## More in RESPONDING TO THE ENVIRONMENT (Humans)

- [Structure and functioning of a nerve](https://www.hlayiso.com/grade-12/life-sciences/notes/responding-to-the-environment-humans/structure-and-functioning-of-a-nerve) — Previous section
- [Disorders of the CNS](https://www.hlayiso.com/grade-12/life-sciences/notes/responding-to-the-environment-humans/disorders-of-the-cns) — Next section
- [All RESPONDING TO THE ENVIRONMENT (Humans) sections](https://www.hlayiso.com/grade-12/life-sciences/notes/responding-to-the-environment-humans)

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