# Periproct

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Last body segment in Annelids

The **periproct** is the final body segment in [annelid](/source/Annelid) worms. The [anus](/source/Anus) is located on this segment.[1] The term also refers to the small region surrounding the anus of the [sea urchin](/source/Sea_urchin).[2]

## See also

- [Prostomium](/source/Prostomium)

- [Earthworm](/source/Earthworm)

- [Sea urchin](/source/Sea_urchin)

## References

1. **[^](#cite_ref-Sims_1-0)** Sims, R & Gerard, B (1985). *Earthworms: Keys and Notes for the Identification and Study of the Species*. London: Published for The Linnean Society of London and the Estuarine and Brackish-Water Sciences Association by E. J. Brill/Dr. W. Backhuys. p. 3.

1. **[^](#cite_ref-Fox_2-0)** Fox, Richard. ["Invertebrate Anatomy OnLine"](http://lanwebs.lander.edu/faculty/rsfox/invertebrates/strongylocentrotus.html). Lander University. Retrieved May 13, 2012.

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Adapted from the Wikipedia article [Periproct](https://en.wikipedia.org/wiki/Periproct) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Periproct?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.