. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. The form* assumed by the bone cells in man. Fig. Various forms of bone cells found in the bone of the Boa Constrictor. Fig. 455. 0 a, form of bone cell in the common frog ; b, bone cells from the crania of the common goldfinch ; c, form of bone cell in the sheep's-head fish ; d, form of bone cells in the green-boned fish. of any very definite enumeration, since no two cells will be found possessed of a like number of branching tubes. The general arrangement of the tubes is radiate as regards the cells, which forms
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. The form* assumed by the bone cells in man. Fig. Various forms of bone cells found in the bone of the Boa Constrictor. Fig. 455. 0 a, form of bone cell in the common frog ; b, bone cells from the crania of the common goldfinch ; c, form of bone cell in the sheep's-head fish ; d, form of bone cells in the green-boned fish. of any very definite enumeration, since no two cells will be found possessed of a like number of branching tubes. The general arrangement of the tubes is radiate as regards the cells, which forms their common centre. This statement requires some qualification, for not uncommonly a much greater number of tubes arise from one side of the cell than from the other, and these tubes all take one direction. A tube after passing some little distance from the cell will in many in- stances divide, and each division pass on distinct from its fellow, equalling in size the parent tube. Frequent anastomoses are effected between different tubes arising from the same cells, but far more frequently between those which arise from neighbouring cells. So fre- quent are the connections that a free com- munication is established between the various cells and branching tubes throughout the substance of the bone. So numerous are the connections between the tubes, and immediately between the cells through the tubes, that a fluid introduced into one cell in a bone may find its way into every other cell of the bone. Indeed this does take place, though not from a single cell, yet from the surface of the bone. If, for instance, you place a bone that is dry, and opaque as a conse- quence of being dry, in spirits of turpentine, in a very little time this bone, before opaque, will become comparatively transparent, and this through the fluid having passed through the tubes into the cells. For, as will be shown, it is the tubes only that open upon the surface of the bone, either the external surface or
Size: 1492px × 1676px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, booksubjectanatomy, booksubjectphysiology, booksubjectzoology
