. Éléments d'histologie. L'histologie. 46 éléments d'Histologie. [Chap. vi.. 55. (1) le cartilage hyalin (Fig. 30 a). Cela se produit à la surfaces articulaires de tous les os, sur les frontières de nombreux os court ; à la partie sternale des côtes, comme les cartilages costaux : à la marge du sternum, de l'omoplate, et l'iléon os ; dans les anneaux de la trachée, les cartilages des bronches, le septum et latérale carti- lages du nez ; et dans la thyroïde et les cartilages cricoïde du larynx. La substance de base est transparente, hyalines, masse - Verre - comme, et ferme. Les cellules sont sphériques ou ovales proto- plasmique

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. Elements of histology. Histology. 46 Elements of Histology. [Chap. vi.. 55. (1) Hyaline cartilage (Fig. 30a). This occurs at the articular surfaces of all bones; on the borders of many short bones; at the sternal part of the ribs, as costal cartilages; at the margin of the sternum, scapula, and os ileum; in the rings of the trachea, the cartilages of the bronchi, the septum and lateral carti- lages of the nose ; and in the thyroid and cricoid cartilages of the larynx. The ground substance is hyaline, transparent, ground - glass - like, and firm. The cells are spherical or oval proto- plasmic corpuscles, each with one or two nuclei. They undergo division, and although the two off- spring are at first close together—half-moon-like —they gradually grow wider apart by the deposit of hyaline ground substance between them. The cells are contained in special cavities called the cartilage lacunas. Each cell generally occupies one lacuna, but according to the state of division a lacuna may contain two, four, six, or eight cartilage cells; the latter are those cases in which division proceeds at a more rapid rate than the deposition or formation of hyaline ground substance between the cells. The part of the cartilage next to the perichondrium shows most active growth; hence the cells are here smaller, closer together, and there is less ground substance. Each lacuna is limited by a delicate membrane, and, according to the state of the cell, is either com- pletely or partially filled out by it. This membrane is called the capsule (Fig. 30a). In many cartilages, especially in growing cartilage, it is thickened by the ad- Fig. 30a. — Hyaline Cartilage of Human Trachea. In the hyaline ground substance are seen the cartilage cells enclosed in capsules.. 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 work.. Kle

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