EEGENEEATION OF TISSUES 19 



Which is their favorite locality 9 



In the horse, they are usually seen in the flexion surface 

 of the pasterns, following barb wire cuts or a brush burn 

 (rope or halter burn), and around the coronary region 

 following calking. 



JSow may excessive scar contraction affect a part ? 



The great contractile power of the cicatricial tissue in 

 extensive scars by puckering up the tissues surrounding the 

 original wound may produce decided deformities, as in larger 

 injuries of the eye-lid it may become everted (ectropium). 



EEGEITEIIATION OP THE VARIOTIS TISSUES, 



How does the regeneration of the shin and mucous membrane 

 take place P 

 As described under "The Healing of Wounds." The 

 epidermis and epithelium of mucous membranes are rapidly 

 replaced. 



Sow do muscular wounds heal ? 



The power of regeneration of muscles is very limited, 

 only taking place in slight injuries, the rule being a connec- 

 tive tissue scar in a muscle wound. 



Sow do tendon wounds heal ? 



Cells are thrown out from the tendon sheath and sur- 

 rounding tissue ; the granulations .thus formed invade the 

 blood-clot which at first was created between the two ends of 

 the tendon. This clot is absorbed, the granulation tissue 

 unites the ends of the tendon and is gradually changed into 

 connective tissue until it is finally difficult to tell the difference 

 between the new and the old tendon fibres. 



