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anus
Introduction References & Edit History
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Illustration of the large intestine showing labeled anatomical features such as the rectum, colon, and anus, with an inset highlighting regions of the colon and a detailed cross-section of the intestinal wall layers, including mucosa, crypts, goblet cells, muscle layers, and serosa. The Human Body
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anus: References & Edit History

Article Contributors

Primary Contributors

  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

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Article History

Type Description Contributor Date
Modified link of Web site: MSD Manual - Consumer Version - Overview of the Anus and Rectum. May 15, 2026
Added media. Nov 30, 2023
Add new Web site: Cleveland Clinic - Anus. Mar 16, 2023
Add new Web site: WebMd - Picture of the Anus. Aug 01, 2018
Add new Web site: Medscape - Anal Canal Anatomy. Aug 01, 2018
New illustration added. Jan 15, 2009
Article revised. Jul 15, 2005
Article added to new online database. Jul 20, 1998
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