Epithelial cells help to protect or enclose organs; some produce mucus or other secretions. Certain types of epithelial cells have tiny hairs called cilia, which help remove foreign substances.
Review Date 11/12/2016
Updated by: Jennifer K. Mannheim, ARNP, Medical Staff, Department of Psychiatry and Behavioral Health, Seattle Children's Hospital, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.