CH. IV.] 



FIBROUS TISSUE. 



45 



periosteum, dura mater, true skin, the sclerotic coat of the eye, 

 and in the thicker fasciae and aponeuroses of muscle. 



lifM'i i 



Fig. 61. Caudal tendon of young rat, showing the arrangement, form, and structure of 

 the tendon cells, x 300. (Klein.) 



The tissue is one of great strength ; this is conferred upon it 

 by the arrangement of the fibres, the bundles of which run 

 parallel, union here, as elsewhere, 

 giving strength. The fibres of the 

 same bundle now and then intersect 

 each other. The cells in tendons 

 (fig. 61) are forced to take up a 

 similar orderly arrangement, and are 

 arranged in long chains in the 

 ground substance separating the 

 bundles of fibres, and are more or 

 less regularly quadrilateral with large 

 round nuclei containing nucleoli, 

 which are generally placed so as to 

 be nearly contiguous in two cells. 

 Each of these cells consists of a 

 thick body, from which processes 

 pass in various directions into, and 

 partially fill up the spaces between, 

 the bundles of fibres. The rows 

 of cells are separated from one 

 :u mther by lines of cement substance. 

 The cells are generally marked by 

 one or more lines or stripes when viewed longitudinally. Thi* 

 appearance is really produced by the wing-like processes of the 



from a cross section of the tail of 

 a rabbit, showing sheath, fibrous 

 septa, and branched connective- 

 tisuue corpuscles. The spaces left 

 white in the drawing represent 

 the tendinous bundles in trans- 

 verse section. X 250. (Klein.) 



