INFLAMMATION 57 



What is the cause of an infectious inflammation ? 



The entrance of patiiogenic micro-organisms into the 

 tissues. 



What daises of bacteria are more commonly concerned ? 



Staphylococci, streptococci, bacillus of tuberculosis, 

 malignant oedema, anthrax, glanders, etc. 



Sow do these bacteria cause inflammations ? 



These micro-organisms do not irritate the tissues mecnani- 

 cally, but become phlogogenous by their chemical nroducts 

 of metabolism (toxines). 



What is phlogosin ? 



A crystallizable chemical of a phlogogenous nature, first 

 obtained from staphylococci cultures by Leber. 



Varieties of Inflammation. 



According to the exudate, what varieties of inflammation are 

 known ? 



■ Serous, fibrinous, purulent, hemorrhagic, gangrenous,, 

 diphtheritic, productive, specific. 



Describe serous inflammation. 



In this type of inflammation the walls of the blood vessels-- 

 are but slightly altered, the exudate is watery, lymph-like,, 

 and contains but few white and red blood cells. It is more' 

 common in the skin, upon the mucous membranes and serous 

 membranes of articulations, tendon sheaths, etc. 



Describe fibrinous inflammation ? 



Also known as croupous inflammation, the exudate 

 abounds in fibrin and white blood cells. When the exuda- 

 tion cells and the newly formed cells of such an inflamed 



