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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
8.2.4.1 Tissues of the Respiratory System [Hist]
[Currently: 1 lecture + 1 ยด 2h class]
| General structure of mucous membranes (mucosa) and serous
membranes (serosa)(pleura, pericardium, peritoneum) |
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| 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. |
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| Surfactant production. |
Hyaline membrane disease. |
| Vessels, nerves and lymphatics of the bronchi and lungs |
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| Alveolar macrophages. Elastic fibres. |
Effects of smoking on respiratory epithelia. |
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