: the epithelium lining the anal canal
Anal fissures are painful tears in the squamous epithelium of the anus (anoderm) . Matthias Stelzner, in 20 Common Problems: Surgical Problems and Procedures in Primary Care

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“Anoderm.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/anoderm. Accessed 9 Mar. 2025.

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