144 CAPILLARY SYSTEM?. 



A. They do very freely wherever they are met with. 



Q. What is the pathology of haemorrhage? 



J2. It is an active or passive exhalation of blood, as 

 the case may be; it is not from rupture of vessels. 



Q. What relation does this general capillary system 

 bear to the arteries and veins? 



/#. It is a general reservoir, into which arteries pour 

 red blood, and from which the veins take black blood; 

 from which also the exhalents with nutritive and other 

 matters pass; the excretions arise from it; the secretory 

 vessels elaborate their fluids from the blood in the general 

 capillary system. 



Q. What proves this distinct organization or continuity 

 of tubes ? 



/2. The continuity from the arterial, through the capil- 

 lary, to the venous system, is proved by the fact that in- 

 jections from the arteries do not pass into the cellular 

 texture. 



Q. What effect has this permeability of the capillary 

 system on the appearances of parts on dissection? 



.#. Before death, tonic action preserves the fluid in a 

 precise part; hence in membranous inflammation the red- 

 ness. But after death, these fluids obeying gravity ,'J,he 

 parts lose the redness which indicates inflammation, and 

 the dissector may imagine there was none. Local irrita- 

 tion, which fixed blood in a part during life and disease, 

 disappearing after death, the blood is removed. 



Q. Does blood disappear equally after death from chro- 

 nic as from acute inflammation? 



ft. It does not; in chronic it is more fixed, forming al- 

 most a constituent part of the tissue. 





