THE conm:cti\'f. tissues 



97 



of the trachea and bronchi and of arteries. In the ligamentum 

 nuchae the fibres are coarse (lo to 15^) and arranged in bundles 

 separated from one another by white fibrous tissue containing con- 



FiG. 45. — Coarse Elastic Fibres from Ligamentum Nuchae. 



(Technic 10, p. 101.) 



X500. Teased specimen. 



nective-tissue cells. This white fibrous tissue also penetrates the 

 bundles and separates the individual elastic fibres. A few white 

 fibres and connective-tissue cells are also present (Figs. 45 and 46). 



Fig. 46. — Cross Section of Coarse Elastic Fibres from Ligamentum Nuch:e. X500. 

 (Technic 10, p. loi.) a, Elastic fibres; b, white fibrous tissue and cement substance. 

 The nuclei are the nuclei of fixed connective-tissue cells. 



Elastic tissue may be arranged as thin membranes, as e.g., in the 



walls of blood-vessels. These membranes are usually described as 



composed of a dense mass of flat, ribbon-like elastic fibres, which 

 7 



