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Transition of terminal to respiratory bronchiole
This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x
![Terminal bronchiole <p>This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/O.R.I.R.RB_.03.P01.png)
Terminal bronchiole
This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x
![Respiratory bronchiole <p>This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/O.R.I.R.RB_.03.P02.png)
Respiratory bronchiole
This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x
![Simple columnar epithelium <p>This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/O.R.I.R.RB_.03.P03.png)
Simple columnar epithelium
This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x
![Simple cuboidal epithelium <p>This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/O.R.I.R.RB_.03.P04.png)
Simple cuboidal epithelium
This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x
![Cilia <p>This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/O.R.I.R.RB_.03.P05.png)
Cilia
This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x
![Club cells <p>This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/O.R.I.R.RB_.03.P06.png)
Club cells
This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x
![Elastic fibers <p>This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/O.R.I.R.RB_.03.P07.png)
Elastic fibers
This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x
![Smooth muscle <p>This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/O.R.I.R.RB_.03.P08.png)
Smooth muscle
This transition shows the simple columnar ciliated epithelium of the terminal bronchiole continuing into simple cuboidal epithelium with scattered cilia of the respiratory bronchiole. Club cells are present in both passages, as are longitudinally arranged elastic fibers in lamina propria and a thin muscle layer. 400x