LECTURE XV. 



APRIL 10, 1858. 

 PASSIVE PROCESSES. FATTY DEGENERATION. 



Passive processes in their two chief tendencies to degeneration ; Necrobiosis (soft 



ening and disintegration) and induration. 



Fatty degeneration Histological history of fat in the animal body ; fat as a com- 

 ponent of the tissues, as a transitory infiltration, and as a necrobiotic matter. 

 Adipose tissue Polysarcia Fatty tumours Interstitial formation of fat Fatty 



degeneration of muscles. 

 Fatty infiltration Intestines ; structure and functions of the villi Reabsorption 



and retention of the chyle Liver ; intermediate interchange of matter by 



means of the biliary ducts. Fatty liver. 

 Fatty metamorphosis Glands; secretion of sebaceous matter and milk (colostrum) 



Granule-cells and granule-globules Inflammatory globules Arteries ; fatty 



usure and atheroma in them Fatty debris. 



WE have, gentlemen, hitherto nearly always spoken 

 of the actions of cells and the processes which manifest 

 themselves in them, when, in consequence of any exter- 

 nal influence, they give signs of their vitality. There 

 take place in the body, however, also a tolerably large 

 number of passive processes, in which, as far at least as 

 can be demonstrated, there is no particular activity dis- 

 played by the cells. Allow me , therefore, before we 

 proceed farther in the description of the active processes, 

 to speak a little more in detail concerning these passive 

 processes. For the history of the affections of cells, as 

 they are exhibited to us in our patients, is generally 



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