Histology of Respiratory Tract

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Histology of Respiratory Tract


Trachea and bronchioles

  • mucosa
  • submucosa
  • cartilaginous layer
  • adventitia

Alveoli

Type I cells

  • very thin, squamous cells
  • rest on basement lamina which is often fused to that of capillary network

Type II cells

  • much more rounder, stick out into alveolus
  • secret (and perhaps reabsorb) surfactant

Brush cell

  • rare

 

8.2.4.1 Tissues of the Respiratory System [Hist]

[Currently: 1 lecture + 1 ´ 2h class]

General structure of mucous membranes (mucosa) and serous membranes (serosa)(pleura, pericardium, peritoneum)
Cell types and their functions in tracheal, bronchial and bronchiolar epithelia: ciliated cells, goblet cells Brush cells, Clara cells, small granule-containing cells).
Alveoli (type I and type II pneumocytes); alveolar capillaries.
Surfactant production. Hyaline membrane disease.
Vessels, nerves and lymphatics of the bronchi and lungs
Alveolar macrophages. Elastic fibres. Effects of smoking on respiratory epithelia.
 

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