Stratified columnar epithelium is found in which locations?

• A. Trachea
• B. Pharynx, epiglottis, anus, and urethra
• C. Lining of nasal cavity
• D. Surface of skin

Answer: (B)

Stratified columnar epithelium provides both protection and some secretory capability in areas where tissues meet and experience abrasion or need a robust lining. That combination makes it suitable for certain junctions in the body, such as the pharynx and epiglottis where the digestive and respiratory tracts intersect, and in parts of the anus and urethra where durable, layered lining is beneficial.

In contrast, the trachea and nasal cavity are lined primarily by pseudostratified ciliated columnar epithelium with goblet cells, a specialized respiratory lining that moves mucus and trapped particles. The surface of the skin is covered by stratified squamous epithelium, which is optimized for resisting abrasion and preventing water loss.