A 43-year-old woman undergoes bronchoscopy for evaluation of chronic cough. A biopsy is taken from the tracheal mucosa. The pathologist notes an epithelial lining with nuclei at different heights, cilia on the apical surface, and goblet cells resting on a basement membrane. Which of the following best describes the normal epithelium of this structure?
- A)Stratified squamous epithelium
- B)Pseudostratified ciliated columnar epitheliumGABARITO
- C)Simple cuboidal epithelium
- D)Simple columnar epithelium
- E)Transitional epithelium
Explicação
The trachea is lined by pseudostratified ciliated columnar epithelium with goblet cells. Although the nuclei appear at different levels, all cells contact the basement membrane, producing the pseudostratified appearance. The cilia and mucus help support mucoci... Ver explicação completa e trilha adaptativa →