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NBME 18 Answers

nbme18/Block 2/Question#27
58 yo man, 4 years of recurrent cough and sputum
Pseudostratified columnar epithelial cells🔍

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submitted by lae(6),

chronic bronchitis causes squamous metaplasia of the pseudostratified columnar epithelium in the bronchi and bronchioles

---- these columnar epithelium normally contribute to the mucociliary clearance and smoking also damages this clearance, so can get the clue from that too

donttrustmyanswers  Pseudostratified columnar epithelium is only present in the bronchi. The bronchioles have simple ciliated columnar epithelium. +1  



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