. Compendium of histology. Histology. THE LUNGS. 159 thoracic cavity compels the pulmonary alveoli to maintain a certain expansion permanently. In consequence of their great distensibility, the lungs follow the expansion of the thorax. By means of their elastic power, and assisted by the muscles of their canals, they contract at each expiration,. Fig. 147.—Transverse section through the pulmonary substance of a child of nine months. A number of pulmonary cells, b, surrounded by the elastic fibrous net-work, which bound them in a trabecula-like manner, and, with the thin structureless membrane,
. Compendium of histology. Histology. THE LUNGS. 159 thoracic cavity compels the pulmonary alveoli to maintain a certain expansion permanently. In consequence of their great distensibility, the lungs follow the expansion of the thorax. By means of their elastic power, and assisted by the muscles of their canals, they contract at each expiration,. Fig. 147.—Transverse section through the pulmonary substance of a child of nine months. A number of pulmonary cells, b, surrounded by the elastic fibrous net-work, which bound them in a trabecula-like manner, and, with the thin structureless membrane, forming their walls {11) ; d, por- tions of the capillary net-work with their vessels curved in a tendril-like manner, projecting into the cavities of the pulmonary cells ; c, remains of the epithelium. as far as the thoracic walls permit. It is only when the tho- racic cavity is opened that the lungs with their alveoli com- pletely collapse. The parietes of the pulmonary vesicles, a continuation of the terminal canal system, is a very thin connective-tissue mem- brane. It is surrounded by elastic fibres, finer and coarser, sometimes single, sometimes aggregated in groups. The latter are met with in the interalveolar septa. The fundus of the pulmonary alveolus shows only the finest elements, measur- ing mm., in part more isolated, in part connected in a reticular Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Frey, Heinrich, 1822-1890; Cutter, George R. (George Rogers), b. 1840, tr. New York, G. P. Putnams sons
Size: 1728px × 1446px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, bookpublishernewyo, bookyear1876
