54 



THE CONNECTIVE TISSUES. 



[CH. v. 



3. The cartilages of the nose, of the windpipe, of the external 

 auditory meatus, and the greater number of the laryngeal 

 cartilages. 



4. Temporary cartilage ; rods of cartilage which prefigure the 

 majority of the bones in process of development. 



Articular cartilage : here the cells are rounded and scattered 

 in groups of two and four through the matrix, which is non- 

 fibrillated (fig. 74), and much firmer than the ground-substance 



Fig. 75. Section of transitional cartilage, a, ordinary cartilage cells ; I b, those 

 with processes. (Alter Schafer.) 



of the connective tissues proper ; but it is affected in the same 

 way with silver nitrate. 



In the neighbourhood of synovial membranes, the connective- 

 tissue fibres of which extend into the matrix, the cells are branched 

 (transitional cartilage) (fig. 75). 



The next figure (fig. 76) shows the general arrangement of the 

 cell-groups in a vertical section of articular cartilage. Cartilage is 

 free from blood-vessels, and also from nerves. It is nourished by 

 lymph, but canals connecting the cell-spaces are not evident. 



Costal cartilage : here the matrix is not quite so clear, and 

 the cells are larger, more angular, and collected into larger 

 groups than in articular cartilage. Under the perichondrium, a 



