PATHOLOGY. 
Of what does pathology treat ? 
Of the physiolozy of disease and of the changes in structure 
brought about by disease. 
CHANGES IN THE BLOOD CIRCULATION. 
What is hyperemia ? 
It is a condition of a tissue containing more blood than normal. 
What are the two general forms of hyperemia ? 
Active and passive. 
Upon what do these conditions depend ? 
Active hyperzemia, or congestion, depends upon an increased flow of 
blood ¢o the part, while passive hyperemia depends upon a decreased 
flow of blood from the part. 
What is anemia? 
It is a condition in which there is less than the normal amount of 
blood in a tissue. 
Upon what conditions does anemia depend ? 
Kither upon a general deficiency of blood throughout the body 
(oligemia) or the diminution of blood supply to the affected part 
(ischemia). 
Describe the condition called edema. 
The lymph which bathes the tissues of the body is simply a transu- 
dation from the bloodvessels; normally this is carried off by the 
lymph channels. When this transudation is greater in amount than 
the lymph channels can carry off, it collects in the tissues, and the re- 
sulting condition is called oedema. 
Wiss Fa the terms applied to edema of different parts of the 
ody ? 
Hydrops, or dropsy, when the fluid collects in the greatcr cavities 
of the body. 
Anasarca when beneath the integumentary structures. 
Ascites when collected in the abdominal cavity, and general dropsy 
when the effusion is general throughout the body. 
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