Inflammation and Repair — MCQs

Which mediator of acute inflammation is not derived from cells?

A 35-year-old man has had increasing dyspnea for the past 24 hours. A chest radiograph shows large, bilateral pleural effusions. Thoracentesis yields 500 mL of slightly cloudy yellow fluid from the right pleural cavity. Cytologic examination of the fluid shows many neutrophils, but no lymphocytes or RBCs. Which of the following mechanisms contributes most to the pleural fluid accumulation?

Which of the following has the least ability to regenerate?

Epithelioid granuloma consists mainly of which type of cells?

Which of the following substances most likely has the greatest affinity for neutrophils?

Which of the following acts as an acute phase reactant?

A 25-year-old machinist is injured by a metal sliver in his left hand. Over the next few days, the wounded area becomes reddened, tender, swollen, and feels warm to the touch. Redness at the site of injury in this patient is caused primarily by which of the following mechanisms?

Lipoxins synthesized from arachidonic acid act by?

What is the most pathognomonic sign of irreversible cell injury?

Leukotrienes cause all of the following effects, EXCEPT: