58 PRINCIPLES OP VETEEINAET SUEGEEY 



tissue are caught in a fine reticulum of fibrin, this membrane- 

 like covering of the inflamed tissue is termed a fibrinous 

 pseudo-membrane. Fibrinous inflammation is most fre- 

 quently met with upon the serous membranes of articulations, 

 bursae, tendon sheaths and mucous membranes. 



Describe purulent inflammation. 



Usually the result of an infection with pus cocci. The 

 accumulation of pus may be circumscribed or diffused. 



What is an abscess 9 



A newly formed cavity circumscribed by granulation 

 tissue and containing pus. 



What is a purulent infiltration ? 



It is a diffused collection of pus in inflamed tissues. 

 What is empyema ? 



An accumulation of pus in the sinuses of the head or 

 articulations, etc. 



Describe hemorrhagic inflammation. 



In this form of inflammation the walls of the vessels 

 in the affected tissues have undergone material alteration 

 and the exudate contains a great many red blood corpuscles. 



Describe gangrenous inflammation . 



One of the most malignant types. The exudate is putrid, 

 discolored and undergoing decomposition due to the presence 

 of putrefactive bacteria. 



Explain diphtheritic inflammation. 



This represents a coagulation necrosis of the mucous 

 membrane, followed either by the formation of a diphtheritic 

 pseudo membrane upon the mucous membrane or loss of 

 tissue in the necrotic parts. 



