228 PHYSIOLOGY AT THE FARM. 



aspect of aponeuroses. Thus the fibrous tissue is seen under 

 two principal forms viz., the fascicular and the membranous. 



The fibrous tissue is very strong and tough, of a white or 

 yellowish-white colour: it is perfectly pliant, yet devoid of 

 extensibility. 



The fibrous tissue is made up of filaments agreeing in all 

 respects with the white filaments of the areolar tissue. The 

 fibrous tissue, like the areolar, is resolved into gelatine by 

 boiling in water. 



Yellow or Elastic Tissue. As the fibrous tissue is character- 

 ised by its want of extensibility, so the yellow tissue is remark- 

 able for possessing that property in a high degree it is, in 

 short, an extensile and highly elastic material. 



Examples of this texture on the great scale are seen in the 

 horse, ox, elephant, and other large quadrupeds, in which it 

 forms what is called the ligamentum nuchce, an elastic liga- 

 ment that extends from the spines of the vertebrae to the 

 occiput (hind head), so as to aid in the support of the head. 

 In the same animals it constitutes an elastic subcutaneous 

 fascia, spread over the muscles of the abdomen, so as to sup- 

 port the contents of that cavity. 



In the human body this tissue forms 1, the ligamenta 

 subflava, extending between the arches of adjacent vertebrae ; 

 2, The chief part of the stylohyoid, thyrohoid, and cricothyroid 

 ligaments, the vocal cords, and the suspensory ligament of the 

 penis also the longitudinal bands beneath the mucous mem- 

 brane of the windpipe and its ramifications ; 3, The elastic 

 material in the coats of the blood-vessels, particularly of the 

 arteries ; 4, The submucous coat of the gullet and of the 

 lower part of the rectum and part of the tissue which sur- 

 rounds the muscular coat of the gullet on its external aspect ; 



5, The tissue underlying the serous membrane in many parts ; 



6, Part of certain fascise ; 7, Part of the tissue of the skin. 



