. Elements of histology. Histology. 122 Elements of Histology. surrounded by a special layer of polyLedral endothe- lial cells—germinating cells (Figs. 85, %^). Such stomata are numerous on the peritoneal surface of the central tendon of the diaphragm, in which are found straight lyn)ph channels between the tendon bundles, and these channels communicate by nu- merous stomata with the free surface. A similar arrangement exists on the costal pleura, the omentum, and the cisterna Ivm- phatica magna of the frog. {See Chapter IV.) 117. The serous uieiiibraiies con- sist of endothelium upon a layer
. Elements of histology. Histology. 122 Elements of Histology. surrounded by a special layer of polyLedral endothe- lial cells—germinating cells (Figs. 85, %^). Such stomata are numerous on the peritoneal surface of the central tendon of the diaphragm, in which are found straight lyn)ph channels between the tendon bundles, and these channels communicate by nu- merous stomata with the free surface. A similar arrangement exists on the costal pleura, the omentum, and the cisterna Ivm- phatica magna of the frog. {See Chapter IV.) 117. The serous uieiiibraiies con- sist of endothelium upon a layer of fibrous tissue with networks of line elastic fibres : they contain networks of ])lood capillaries and numerous lymphatic vessels arranged in (superficial and deep) plexuses. Plexuses of lymphatics are very numerous in the pleura costalis —or rather, intercostalis—in the diaphragm and pleura pulmonalis. They are important in the process of absorption from the pleural and peritoneal cavity respectivelv. Lymph and lymph corpuscles, and other solid particles, are readily taken uj:) by the stomata {see Fig. 31) and brought into the lymphatics. Here the respiratory movements of the intercostal muscles, of the diaphragm, and of the lungs respectively, pro- duce the result of the action of a pump. 118. There exists a definite relation between the lymphatics on the one hand and the epithelium on the. Fig. 86.—Endotheliuia ami Stomata of tlie Peritoneal Surface of the Septum Cis- ternse Lj-mpbaticte Magnge of the Frog. {Hawlhook.). 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 Klein, E. (Edward), 1844-1925; Edkins, John Sydney, b. 1865. Philadelphia : Lea Brothers
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