Which epithelial classification describes the lining of the human trachea and primary bronchi?
Answer and explanation
Correct answer: D. Pseudostratified ciliated columnar epithelium with goblet cells
The respiratory conducting tract is lined by pseudostratified ciliated columnar epithelium containing mucus-secreting goblet cells (the mucociliary escalator). Simple squamous lines alveoli; stratified squamous lines esophagus; transitional lines urinary tract.
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