NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The general activities of phagocytes are
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Survey the tissue compartments and discover microbes, particulate matter, and injured or dead cells
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Ingest and eliminate these materials
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Recognize immunogenic information (antigens) in foreign matter
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All of the above
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Explanation:
Detailed explanation-1: -Phagocytic leukocytes must integrate three functions in performance of their antimicrobial defense activities: mobilization of cells from the bloodstream to the site of inflammation; phagocytosis of the invading microbe; and killing of the organism once it is ingested.
Detailed explanation-2: -The main types of phagocytes are monocytes, macrophages, neutrophils, tissue dendritic cells, and mast cells.
Detailed explanation-3: -Phagocytosis can be divided into four main steps: (i) recognition of the target particle, (ii) signaling to activate the internalization machinery, (iii) phagosome formation, and (iv) phagolysosome maturation.
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