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9 Cards in this Set
- Front
- Back
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The cause of cell injury and death may sometimes be inferred from the type of necrosis present. TRUE/FALSE
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TRUE
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What is liquefactive necrosis?
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It is the type of produced by acute bacterial infections. The dead cells are completely dissolved by hydrolytic enzymes from acute inflammatory cells and all that remains is a liquid mass.
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Can liquefactive necrosis also be seen with fungal infections?
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Yes.It is the type of necrosis that is produced by ischemic necrosis of the brain.
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Ischemia produces what kind of necrosis?
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A coagulative necrosis which is given by loss of the cell nucleus, acidophilic change of the cytoplasm, and preservation of the outline of the cell.
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Sudden severe ischemia produces coagulative necrosis in practically every tissue except the brain. TRUE/FALSE
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TRUE.
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Give an example of coagulative necrosis.
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Myocardial infection from the sudden occlusion of the coronary artery.
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What is caseous necrosis?
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It is a combination of coagulative and liquefactive necrosis, but the necrotic cells are not totally dissolved and remain as amorphic, coarsely granular, eosinophilic debris. It has the appearance of clumped cheese.It is seen in tuberculous infections.
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Where is fat necrosis seen?
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With acute pancreatic necrosis, it is fat cell death caused by lipases.
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What is fibrinoid necrosis?
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It is an abnormality seen sometimes in injured blood vessels, where plasma proteins abnormally accumulate within the vessel walls.
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