Diphtheritic inflammation is characterized by:
Correct answer: B. A fibrinonecrotic membrane attached to mucosal surfaces
- A. A clear watery fluid on an intact serosa
- B. A fibrinonecrotic membrane attached to mucosal surfaces
- C. A localized collection of pus in a capsule
- D. A diffuse increase in tissue blood flow
Explanation
Diphtheritic inflammation causes mucosal necrosis followed by deposition of fibrin, producing a firmly attached fibrinonecrotic membrane. A loose superficial membrane is more typical of a pseudomembranous pattern, while a capsule filled with pus indicates an abscess.
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Covers the causes and mechanisms of disease, cellular injury, inflammation, healing, circulatory disturbances, neoplasia and disorders of major organs. It also includes gross and microscopic pathological changes, specimen interpretation and the distinction between aetiology, pathogenesis, clinical signs and lesions.
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