CAPILLARY SYSTEMS. 147 



Q. What relations do the black and red blood bear to 

 inflammation? 



ft. When the inflammation is active, the red blood is 

 found in the capillaries; when the inflammation is passive, 

 black blood is in them. 



Q. In what tissues is inflammation most frequent? 



ft. In those tissues where there are the greatest num- 

 ber of capillaries, such as the mucous and serous. It at- 

 tacks those tissues where the functions of the capillaries 

 are most diversified, that is, where nutrition, secretion, ex- 

 halation and absorption exist. Where nutrition is only in 

 existence in the capillaries of a tissue, inflammation is 

 comparatively rare. 



Q. What accounts for the different aspects of inflam- 

 mation in the various tissues? 



ft. The varieties in the organic sensibility of these tis- 

 sues. 



Q. What inflammation prevails in the cellular texture? 



ft. The phlegmonous form. 



Q. What inflammation is most common in the skin ? 



ft. The erysipelatous. 



Q. What is the inflammation observed in the mucous 

 tissue? 



ft. It is the catarrhal. 



Q. Do the fluids formed in the terminations of these 

 inflammations differ? 



/?. They do. The pus of phlegmon differs from that of 

 erysipelas. There is no resemblance between the fluid of 

 catarrh, and the flaky fluids from the serous surfaces. The 

 fibrous tissue does not suppurate. 



Q. Is there a peculiarity of structure in the capillaries 

 of the various organs? 



