TISSUES. 



3. Yellow Fibrous Connective Tissue. The matrix 

 in this consists of elastic fibers that are branched, 

 and usually coarser than 

 the white nonelastic fibers. 

 They do not swell up when 

 treated with acetic acid 

 and yield elastin on boil- 

 ing. Like the preceding, 

 the fibers are frequently 

 grouped into bundles with 

 a limited supply of blood- 

 vessels and connective- 

 tissue cells. This tissue 



is found wherever elasticity is required, as in the 

 ligamentum nuchae and subflava, in the walls of 



Fig. 39. Longitudinal section 

 of tendon. 



Fig. 40. a, Yellow elastic fibers from the teased ligamentum nuchse 

 of the ox; b, Cross-section of a portion of the ligamentum nuchae of the 

 ox. The elastic fibers are grouped in bundles with a few intervening 

 connective-tissue cells. 



arteries, and in the membrana propria of the peri- 

 toneum and pleura. 



4. Reticular Connective Tissue. This is a reticu- 



