Elements of histology / by E. Klein.

  • Klein, E. (Edward) 1844-1925.
Date:
1889
Catalogue details

Licence: Public Domain Mark

Credit: Elements of histology / by E. Klein. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    55. (1) Hyaline cartilage (Fig. 35). This occurs on the articular surfaces of all bones; on the borders of many short bones ; in 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 cartilages of the nose; and in the thyroid and cricoid cartilages of the larynx. The ground sub- stance is hyaline, i.e., transparent, like ground glass, and firm. The cells are spherical or oval pro- toplasmic corpuscles, each with one or two nuclei. They undergo division, and although the two off- springs are at first close together (half moon-like in optical section), they gradually grow wider apart by the deposit of hyaline ground substance between them. The cells are contained in cavities called the cartilage lacunce. Each cell generally occupies one lacuna, but, according to the progress of division, a lacuna may cont-iin 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 sho ws most act] vegrow th; hence the cells are here smaller, closer together, and there is less ground substance. Each lacuna is lined 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. 35). In many cartilages, especially in growing cartilage, it is thickened by the ad- E—l' Fig. 35.—Hyaline Cartilage of Human Trachea. In tlie liyaline cround sulistanoe are seen the cartilage cells enclosed in caijsult's.