112 VETERINARY PATHOLOGY. 



The most important variations in the quality of blood that 

 concerns the student of general pathology are due to the varia- 

 tions of the percentage of water contained. Hydremia is ac- 

 companied bv disturbances of the renal function and by oedema. 

 Anh}'dremia is producti\e of a slow weak pulse and the sec- 

 ondar\^ changes resulting therefrom. E.xcess of carbon dioxide 

 or urea in the blood stimulates the vasu-constrictor nerves thus 

 causing arterial contraction. 



Hemcirrhagic diathesis or hemophilia is an inherited condi- 

 tion in which there is little or no tendency for coagulation of 

 blood. Tlie cause of this condition is the absence of some 

 blood ci.mstituent essential to coagulation, 



HKAIORRHACK. 



DEFINITION. 

 ETIOLOGY. 



Ruplitred L'CsseL 



Rhexis or diahrosis. 

 1)1 creased per])ieability. 



Diapedcsis. 

 Predisposition ( lictiwpJulia ). 

 J-.iRIETIES. 

 Locution. 

 Tissue. 



Petechia (flea bite) pin point. 



Eccliyinosis (over-Aoiv) from pin point to size of dime. 

 Stififjillatioii (swelling) bniise. 

 Effusion. 



Hematoma (blood lutnor). 

 Infarction. 

 .S'urface — .Skin, mucous, membrane, scrotis membrane. 

 Epista.vis. 

 Hematemesis. 

 Hemoptysis. 

 Hematuria. 

 Hematidrosis. 

 Hematometra.. 

 Hematocele. 

 Metrorrhagia. 

 Hemathora.r. 

 Heinocoelia. etc. 

 J 'cssels. 



Cardium. 

 .-irteries. 

 I'eins. 

 Capillaries. 

 APPEAR.-iNCE. 

 Macroscopic. 

 Microscopic. 



Tissue hemorrhaqe 

 Clot. 

 EFFECTS. 



Rate of oiitfloiv. 



Location. 



Seci'iidary chair'e of crtravasate. 



