CONNECTIVE TISSUES 



63 



which may be softened or dissolved in acetic acid. They may 

 exist, as in dense tendons, without admixture. 



Cells are found between the bundles of fibers, known as con- 

 nective tissue corpuscles. The older and more dense the structure, 

 the less frequent are these cells; while in young connective 

 tissue, stained, the nuclei of the corpuscles constitute a promi- 

 nent feature of the specimen under the microscope. 



Having obtained a piece of tendon from a recently killed bul- 

 lock, tease a fragment on a slide in a few drops of water, Select a 



FIG. 37. CONNECTIVE TISSUE. 



A. Teased fibers. 

 C. Fibrillse. 



portion which splits easily and separate the fibrils as much as 

 possible. Cover, and examine (H). 



Fine, wavy fibers are seen composing the fasciculi. If the 

 dissection has been sufficiently minute, you may succeed in demon- 

 strating ultimate fibrillaa. These are best made out, as at C in Fig. 

 37, where the parts of a bundle have been separated for some dis- 

 tance, leaving the finer elements stretching across the interval. 



YELLOW ELASTIC TISSUE 



This tissue consists of coarse, shining fibers (averaging about 8f- 

 in diameter) which frequently branch and anastomose. They are 



