NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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attach to and/or enter cells of pathogens
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consuming nutrients that would otherwise be available to pathogens
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presence stimulates certain parts of the 2nd line of immune defense
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sometimes changes the pH of the area they inhabit in ways they help them & hinder competing microbes
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Detailed explanation-1: -The normal microbiota of skin tends to inhibit transient-microbe colonization by producing antimicrobial substances and outcompeting other microbes that land on the surface of the skin. This helps to protect the skin from pathogenic infection.
Detailed explanation-2: -1) The mucus represents the primary barrier limiting contact between the microbiota and host tissue and preventing microbial translocation. 2) Epithelial cells produce antimicrobial peptides that also play a significant role in limiting exposure to the commensal microbiota.
Detailed explanation-3: -The microbiota directly provides protection against infection by invading pathogens by limiting access to nutrients (described below) as well as indirectly by bolstering host innate and adaptive immune responses (Macpherson and Uhr 2004; Duan et al.
Detailed explanation-4: -The normal flora influences the anatomy, physiology, susceptibility to pathogens, and morbidity of the host.