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Epithelium

Definition

The term "epithelium" refers to layers of cells that line hollow organs and glands. It is also those cells that make up the outer surface of the body.

Information

Epithelial cells help to protect or enclose organs. Most produce mucus or other secretions.

Certain types of epithelial cells have tiny hairs called cilia, which help remove foreign substances.

Epithelial cells are arranged in single, or multiple layers, depending on the organ and location.

References

Dinulos JGH. Principles of diagnosis and anatomy. In: Dinulos JGH, ed. Habif's Clinical Dermatology: A Color Guide in Diagnosis and Therapy. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 1.

Merriam-Webster Dictionary. Epithelium. www.merriam-webster.com/dictionary/epithelium. Accessed January 17, 2023.

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Contact Atlanta Obsetrics and Gynaecology at The Womens Center Millennium Hospital - 404-ATL-BABY

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Review Date: 10/20/2022

Reviewed By: Linda J. Vorvick, MD, Clinical Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.