INFLAMMATION. 



149 



Stasis. — The resistance may become greater than the pro- 

 pelling force and the circulation cease for a varying period of 

 time. This condition is denominated stasis. 



E.viiiL'Jioii. — X'arying quantities of tlie fluid and of the cell- 

 ular constituents of the blood pass througli the \essels nur- 

 mally and an increased quantity escapes through during in- 

 flammation. The portion of the l)lood that escapes thmugh the 

 blood vessels is called exudate. The [lassing nf the exudate 



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maryinatiuii ol len<MM",\ tes l.Npiey 

 af inflamniatiun. 



ihc first sta 



through the vessel wall is termed exudation. It is still unde- 

 termined whether the normal tissue lymph is a secretory pro- 

 duct of the capillary endothelium or is produced by such physi- 

 cal processes as diffusion or filtration. The source of tlie in- 

 flammatory exudate is no doubt, the same as the source > F nor- 

 mal tissue lymph. Exudation is a result of the vascular dis- 

 turbances. 



It has been previously stated that in normal circulatory 

 blood the corpuscles occupy the axial stream and the plasma the 



