Anatomy & Histology · single question
A maxillary 2nd molar is extracted and comes out with pseudostratified columnar ciliated epithelium attached. This epithelium is from the:
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Correct answer: C. Maxillary sinus floor (Schneiderian membrane)
- A. Incorrect – sulcular epithelium is non-keratinized stratified squamous.
- B. Incorrect – oral mucosa is stratified squamous epithelium.
- C. Correct – respiratory (pseudostratified ciliated columnar) epithelium lines the maxillary sinus; finding it signals an oroantral communication.
- D. Incorrect – also stratified squamous, not respiratory epithelium.
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