A nurse observes redness, warmth, swelling and pain around a small wound. Which process best explains these findings?
Correct answer: A. Local inflammatory response
- A. Local inflammatory response
- B. Loss of immune memory
- C. Reduced antibody production
- D. Destruction of red cells
Explanation
Inflammation increases local blood flow and vascular permeability, allowing immune cells and plasma proteins to reach injured tissue. The redness, warmth, swelling and pain are typical local inflammatory signs, not evidence of red cell destruction.
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About Blood and Immunity
Blood and immunity covers plasma, red blood cells, white blood cells, platelets, haemoglobin, blood groups and haemostasis. It explains innate and adaptive defenses, antibodies, lymphocytes, inflammation, vaccination and immune memory, with a distinction between active and passive immunity and between antigen and antibody.
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