PLATE IV 



Changes in the blood-vessels and tissues due to inflammation. (From 

 Russell Howard's "Surgical Nursing," by permission of the author.) 



A. Normal capillary blood-vessel and connective tissue : f.t., Fibrous tis- 

 sue ; c.tc, connective-tissue cell ; w.c., white blood corpuscle ; c., capillary ; e.t., 

 elastic tissue. 



B. First change. Dilatation and congestion of blood-vessel ; the white 

 cells arranged along the sides of the vessel wall ; exudation of serum. 



C. Second change. Blood-vessel dilated and congested ; exudation of white 

 cells (phagocytes); multiplication of fixed connective-tissue cells ; fibrous and 

 elastic tissue indistinct. 



D. Third change. Rupture of the congested vessel and escape of red cor- 

 puscles ; multiplication of connective-tissue cells ; normal tissue very indistinct. 



E. Pus. Breaking down of the whole tissue, due to the presence of micro- 

 organisms ; suppuration. 



F. Chronic inflammation. Blood-vessel small ; great increase of fibrous 

 tissue. 



