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trachealis muscle

1
lamina epithelialis

2
lamina propria

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tunica submucosa

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tunica muscularis

what tunica
tunica submucosa

what is it, what’s the orange circle
submucosal gland, serous cells

tunica muscularis

Large blood vessel

Large airway space

Lumen of large bronchus

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Lamina epithelialis

2
Lamina propria

3
Lamina muscularis

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Tunica submucosal

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Tunica musclaris

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Tunica adventitia

Bronchiole lumen

Simple columnar Clara cells

Smooth muscle

Bronchiole lumen

Terminal bronchiole

Respiratory bronchiole

Respiratory bronchiole

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Gaps in respiratory bronchioles tunica mucosa

Covered terms
Alveolus

Blue
Type 1 pneumocyte nuclei or endothelial cell nuclei

Green
Type 2 pneumocytes w/secretory granules

Black
Free ranging alveolar macrophage