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RESPIRATORY SYSTEM

the same photos WITH NO LABELS

TRACHEA
     Stained with haematoxylin and eosin

1 - tunica mucosa
2 - tunica submucosa
3 - fibro-elastic layer
4 - tunica adventitia

TRACHEA
     Stained with haematoxylin and eosin

1 - tunica mucosa
2 - tunica submucosa
3 - fibro-elastic layer
4 - tunica adventitia
5 - epithelium of the mucosa
6 - lamina propria of the mucosa
7 - lamina muscularis of the mucosa
8 - glands in the tunica submucosa
9 - hyaline cartilage

TRACHEA
     Stained with haematoxylin and eosin

1 - tunica mucosa
2 - tunica submucosa
3 - fibro-elastic layer
5 - epithelium of the mucosa
6 - lamina propria of the mucosa
7 - lamina muscularis of the mucosa
8 - evacuatory ducts of submucosal glands
9 - hyaline cartilage

LUNG
     Stained with haematoxylin and eosin

1 - middle diameter bronchus
2 - epithelium of the mucosa
3 - lamina propria of the mucosa
4 - lamina muscularis of the mucosa
5 - tunica submucosa
6 - fibro-elastic layer
7 - tunica adventitia
8 - alveoli
9 - interstitial connective tissue of the lung
10 - glands in tunica submucosa

NOTE!
There is bronchial system in the lung, from main, or primary, bronchi to bronchioles.
Morphologically, there are only two types of bronches in the lung.

  • One type is large and middle diameter bronchi. This type of bronchi have tunica submucosa and fibro-elastic layer.
  • Another type of bronchi is small diameter bronchi. It includes small bronchi and bronchioles. This type has not both submucosal fibro-elastic layers.

LUNG
     Stained with haematoxylin and eosin

1 - middle diameter bronchus
2 - epithelium of the mucosa
3 - lamina propria of the mucosa
4 - lamina muscularis of the mucosa
5 - tunica submucosa
6 - fibro-elastic layer
7 - tunica adventitia
8 - alveoli
9 - interstitial connective tissue of the lung
10 - glands in tunica submucosa

LUNG
     Stained with haematoxylin and eosin

1 - middle diameter bronchus
2 - epithelium of the mucosa
3 - lamina propria of the mucosa
4 - lamina muscularis of the mucosa
5 - tunica submucosa
6 - fibro-elastic layer
7 - tunica adventitia
8 - alveoli
9 - interstitial connective tissue of the lung
10 - glands in tunica submucosa

LUNG
     Stained with haematoxylin and eosin

1 - small diameter bronchus
3 - alveoli


LUNG
     Stained with haematoxylin and eosin

1 - small diameter bronchus
2 - alveoli
3 - epithelium of the mucosa
4 - lamina propria of the mucosa
5 - tunica muscularis propria
6 - tunica adventitia

LUNG
     Stained with haematoxylin and eosin

1 - middle diameter bronchus
2 - epithelium of the mucosa
3 - lamina propria of the mucosa
4 - lamina muscularis of the mucosa
5 - tunica submucosa
6 - fibro-elastic layer
7 - tunica adventitia
10 - glands in tunica submucosa

LUNG
middle diameter bronchus

     Stained with haematoxylin and eosin

2 - epithelium of the mucosa
3 - lamina propria of the mucosa
4 - lamina muscularis of the mucosa
5 - tunica submucosa
6 - fibro-elastic layer
7 - tunica adventitia

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