322 DISEASES OF THE CIRCULATORY SYSTEM. 



Fatty Degeneration. 



In fatty degeneration the individual muscle-fibres are in- 

 volved, the cell-protoplasm being replaced to a great extent by 

 small globules of fat. These droplets appear first in the 

 neighborhood of the nucleus ; but may finally occupy the 

 whole fibre, giving rise to an appearance somewhat resembling 

 cloudy swelling; the granules are larger than in the latter 

 condition, however, dissolve in alcohol, chloroform, or ether, 

 and stain black with osmic acid (Fig. 142). The main factor 



FIG. 142. 



Mmm? 



W: PflP'IV'f ^ ; v ; ' ! ^ilu^ 

 fc ; llli : l|l^;ipil!i 



/ * * , / t ,.. ( 



WRi*** 



. 



Well-marked chronic fatty degeneration of heart, a, healthy ; b, fatty degeneration 

 of muscle-fibres. X 80 (Ziegler). 



in its production is either a general or a local anaemia. The 

 local anaemia may be brought about by sclerosis of the coro- 

 nary arteries, or an improper circulation of the blood through 

 them as the result of a valvular lesion. The condition is 



