60 PEINOIPLES OF VETEEINAEY SUEGEBY 



Describe the quality of svcJi a swelling. 



This varies -witli the nature of the tissues involved. It 

 taiay he of doughy consistency, pitting on pressure, best seen 

 in the loose subcutaneous tissue along the abdomen, due to 

 the presence of serum in the tissue meshes, termed inflam- 

 matory oedema. Swellings due to the accumulation of blood 

 corpuscles or proliferating, fixed connective tissue cells are- 

 harder and do not pit on pressure because these elements ara 

 not as readily displaced by pressure from without. Thia 

 form of swelling is termed plastic or cellular infiltration. 



.Explain the presence of pain in an inflamed part. 



Following the swelling there is an increase of pressure 

 within the infiamed organ which in return means a bruising- j 

 of the sensitive nerves of that part. At the same time it ia 

 probable that the nerves themselves undergo infiammatory 

 changes. The greater the nerve supply, the greater the= 

 swelling, and the less the inflamed part is capable of ex- 

 panding, the greater the pain : for instance, in the skin, 

 pododerm, eye, articulations. 



jSow does impaired function express itself? 



Lameness due to an inflamed muscle, which is rigid an^ 

 contracted. The special senses may be impaired by thfr 

 inflammatory process, and inflamed gland stops to producft 

 its natural secretion. 



Course and Termiuation of Inflammation. 



Classify inflammation according to the rapidity and intensHif 

 of its course ? 

 1. {a) Peracute ; duration only a few hours, as malignant 

 cedema, anthrax. (&) Acute ; here the process sets in with & 



