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Trachea and primary bronchus
The epithelium lining the trachea and primary bronchi is respiratory epithelium, pseudostratified columnar with cilia and goblet cells. The basement membrane is frequently prominent beneath this epithelium. 1000x

Epithelium
The epithelium lining the trachea and primary bronchi is respiratory epithelium, pseudostratified columnar with cilia and goblet cells. The basement membrane is frequently prominent beneath this epithelium. 1000x

Cilia
The epithelium lining the trachea and primary bronchi is respiratory epithelium, pseudostratified columnar with cilia and goblet cells. The basement membrane is frequently prominent beneath this epithelium. 1000x

Goblet cell
The epithelium lining the trachea and primary bronchi is respiratory epithelium, pseudostratified columnar with cilia and goblet cells. The basement membrane is frequently prominent beneath this epithelium. 1000x

Basement membrane
The epithelium lining the trachea and primary bronchi is respiratory epithelium, pseudostratified columnar with cilia and goblet cells. The basement membrane is frequently prominent beneath this epithelium. 1000x