The Site of an Injury Like a Scratch or a Splinter

question 39

Multiple Choice

The site of an injury like a scratch or a splinter initially becomes red and painful.In some instances a yellowish thickened fluid may be present at the injury site.Commonly called pus,this fluid is

• A) blood plasma and the dead neutrophils,macrophages,and bacteria that have accumulated at the wound.
• B) the surviving bacteria that have been successful in avoiding the innate immune response.
• C) dead body cells collaterally killed by the activation of the complement system.
• D) the coagulated cytoplasm and hemoglobin produced by the blood cells injured during the infection.

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