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abdomen
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Two anatomical illustrations of the human abdomen: the left shows labeled abdominal organs including liver, stomach, intestines, and rectum, while the right shows the same area covered by the greater omentum. Encyclopædia Britannica, first edition, art: human thorax and abdomen Detailed anatomical illustration of the human abdominal wall from an anterior view, showing labeled muscles, ligaments, blood vessels, nerves, fascia, and the diaphragm at the top, with the urinary bladder at the bottom. Illustration comparing three beetle species-a deathwatch beetle, a click beetle, and a great silver water beetle-using colored arrows to show how body parts scale differently as overall beetle size increases, demonstrating allometry in evolution.
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abdomen: References & Edit History

Article Contributors

Primary Contributors

  • Kara Rogers
    Kara Rogers is the senior editor of biomedical sciences at Encyclopædia Britannica, where she oversees a range of content from medicine and genetics to microorganisms. She joined Britannica in 2006 and has been a member of the National Association of Science Writers since 2009.

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Modified link of Web site: National Center for Biotechnology Information - Anatomy, Abdomen and Pelvis, Nerves. Nov 01, 2026
Article thoroughly revised and updated. Aug 11, 2026
Add new Web site: Medicine LibreTexts - Overview- Abdomen. Oct 15, 2025
Add new Web site: Academia - Examination of the abdomen (PDF). May 08, 2025
Add new Web site: Medscape - Regions and Planes of the Abdomen. Jul 20, 2024
Add new Web site: UAMS Department of Neuroscience - Topographical Anatomy of the Abdomen. Apr 11, 2024
Add new Web site: Better Health Channel - Abdominal muscles. Jul 11, 2023
Add new Web site: National Center for Biotechnology Information - Anatomy, Abdomen and Pelvis, Nerves. Jan 27, 2023
Add new Web site: TeachMeAnatomy - The Abdomen. Nov 13, 2020
Add new Web site: WebMd - Abdominal Pain: What You Should Know. Nov 30, 2016
New article added. Sep 14, 2016
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