Normal histology : a manual for students and practitioners / by John R. Wathen.

  • Wathen, John Roach, 1872-
Date:
[1905]
Catalogue details

Licence: In copyright

Credit: Normal histology : a manual for students and practitioners / by John R. Wathen. Source: Wellcome Collection.

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    Bone Development.—This occurs by two methods, tlie carti- laginous and the mcmhi'anous. Cartilaginous Development of Bone.—Most of the bones of the body, except those of the head, are first modelled in hya- line cartilage and covered with the perichondrinm or early Fig. 2G. Development of bone, cartilaginous method. (Klein.) periosteum. The process is best divided into the following stages : Proliferation and Cahifimtion.—The cartilage-cells at certain ]daces in the bones begin to arrange themselves in rows, enlarge, and a deposition of lime salts oceurs known as centres of ossification. The hyaline matrix is trans- formed into a number of ealeified trabeeulte inelosing spaces