Histology; normal and morbid.
- Dunham, Edward K. (Edward Kellogg), 1860-1922
- Date:
- 1898
Licence: Public Domain Mark
Credit: Histology; normal and morbid. Source: Wellcome Collection.
Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.
168/466 page 172
![from each other. Notwithstanding this general compactness of arrangement, the lungs are divided by delicate septa of fibrous tissue into more or less well-defined lobules, corresponding to the smallest bronchi or the bronchioles. The alveolar walls are made up of a delicate, loose areolar tissue, containing numerous elastic fibres and supporting the abundant capillary plexus in which the blood suffers the gaseous exchanges with the air that constitute the function of respiration (Fig, 150). Fig. 148. Section of lung of the dog: a, alveolar passage opening into an inf\inrlibulum and also into a solitary alveolus ; b, cross-section of an infundibulum. The dotted line indicates the limits of the infundibular space. Opening into it are a number of alveoli. Were the dotted line removed, the infundibular cross-section and the alveoli around it would form a stellate space in the section, c, junction of two radicles of the pulmonary vein. At the top of the section, to the right, is an oblique section of a Itronchiole. Covering the two surfaces of the alveolar wall is a layer of very thin cellular plates (pavement-epithelium, see Fig. 30), among which are scattered a few cells resembling those lining the alveolar ])a.<.sages. This cellular investment is continuous with the lining of the infundibulum, which is of similar character, and thence with the epithelium covering the inner surface of the alveolar passage. It is to be regarded as a special modification of epithelium, fitting it for usefulness in this situation.](https://iiif.wellcomecollection.org/image/b21223841_0168.jp2/full/800%2C/0/default.jpg)
