Digital Histology
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Trachea and primary bronchus

Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x

Epithelium <p>Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x</p>

Epithelium

Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x
Lamina propria <p>Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x</p>

Lamina propria

Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x
- Elastic lamina <p>Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x</p>

- Elastic lamina

Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x
- Elastic fibers (xs) <p>Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x</p>

- Elastic fibers (xs)

Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x
- Mixed glands <p>Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x</p>

- Mixed glands

Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x
- Ducts <p>Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x</p>

- Ducts

Another image of the trachea or primary bronchus demonstrates the layers adjacent to the lumen. The longitudinally oriented elastic fibers in the elastic lamina are seen cut in cross section. No smooth muscle layer is visible in this image. 400x
Main SlideEpitheliumLamina propria - Elastic lamina - Elastic fibers (xs) - Mixed glands - Ducts