ADIPOSE TISSUE. 



12a 



Fro. 42. 



"White fibrous tissue from a ligament. 

 65 diamrs. 



appears in two forms — the sheeted or aponeurotic, which is found in 

 investing ligaments, membranes, periosteum, &c. ; and the cordi- 

 form, in which the fibres are col- 

 lected in strong bundles ; this is the 

 chief constituent of the binding 

 ligaments, which hold articulating 

 bones together and limit their mo- 

 tion. The tendons of muscles are 

 also made up mostly of this kind 

 of tissue, but both in them and in 

 ligaments yellow elastic fibres are 

 also found. 



Connective tissue contains nerves 

 and blood-vessels, for the supply of 

 neighbouring structures as well as for 

 its own nourishment, and also tendon cells, the latter lying in 

 the spaces between the smaller bundles. When healthy this 

 tissue is little sensitive to pain. 



YELLOW ELASTIC TISSUE. 



This difiers from the white tissue in being yellow, elastic, and 

 not so tough or strong. Its fibres are sometimes as large in dia- 

 meter as ^^QQ in.; but when mixed with white tissue in tendons 

 the diameter may not be more 



than one-sixth of this. The 

 fibres branch and join each 

 other, and their ends curl up 

 when cut or broken. Acetic 

 acid has no effect on the yellow 

 tissue, while it causes fibres of 

 the white to swell greatly and 

 become quite transparent ; 

 again, when white tissue is 

 boUed gelatine is obtained, 

 which is net the result of boil- 

 ing the yellow fibres. 



Yellow elastic tissue is found nearly pure in the ligamentum 

 luchas, the tunica abdominis, the coats of the largest arteries, and 

 elsewhere. The lungs contain a large quantity of this tissue. 



AriPOSE TISSUE., 



Fat or adipose tissue consists of cells containing an oily material, 

 and arranged in isolated groups, or slightly separated by meshes 



Fig. va. 

 Yellow elastic tissue, magnified, from the liga- 

 mentum nuchas of a calf. 65 diamrs. 



