Multiple Choice
Which term refers to the substance ejected through the mouth that can be used for diagnostic purposes in microbiology?
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1. Introduction to Microbiology
Introduction to Microbiology
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Which of the following is the most frequently used portal of entry for pathogens?
A
Respiratory tract
B
Genitourinary tract
C
Skin
D
Gastrointestinal tract
Verified step by step guidance1
Understand that a portal of entry is the site through which pathogens enter the host to cause infection.
Review the common portals of entry: respiratory tract, genitourinary tract, skin, and gastrointestinal tract.
Consider the frequency and ease with which pathogens can enter through each portal. For example, the respiratory tract is constantly exposed to airborne pathogens through breathing.
Recall that the respiratory tract is the most frequently used portal because it provides a large surface area and is exposed to many microorganisms in the environment.
Conclude that among the options, the respiratory tract is the most common portal of entry for pathogens due to its constant exposure and accessibility.
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