Rectum & Anal Canal

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Coloring Image
Histological section showing the junction between the rectum, anal canal, and anal skin stained with H&E. The left panel illustrates the rectum lined by simple columnar epithelium transitioning to the anal canal lined by stratified squamous non-keratinized epithelium. The mucosa of the rectum contains tubular glands, while the anal canal shows a thicker stratified squamous layer. The right panel displays anal skin with stratified squamous keratinized epithelium. Within the dermis, a sebaceous gland and hair follicle are visible, along with an apocrine sweat gland and adipocytes in the surrounding connective tissue. The image highlights the epithelial transition from rectum to anal canal and the presence of skin adnexal structures in the anal region.
Histology Image
University of British Columbia, K. Pinder

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