Which of the following best describes an infection?
The failure of the body to function normally
A diseased section of the body
The invasion of the body by a pathogen and the subsequent symptoms in response to the invasion
The invasion of the body by a disease
The Correct Answer is C
A. The failure of the body to function normally
This is too general and applies to any illness, not specifically infection.
B. A diseased section of the body
This is vague and doesn’t identify causative factors like pathogens.
C. The invasion of the body by a pathogen and the subsequent symptoms in response to the invasion
This accurately defines infection as a host response to pathogen invasion.
D. The invasion of the body by a disease
Diseases don’t invade; pathogens do. This option is not scientifically accurate.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Potassium
Potassium relates to fluid/electrolyte balance, not directly to infection.
B. WBC count
An elevated white blood cell (WBC) count indicates the body is mounting an immune response, suggesting infection.
C. BUN
BUN measures kidney function and hydration status, not infection.
D. RBC count
RBCs relate to oxygen-carrying capacity (anemia, blood loss), not infection.
Correct Answer is C
Explanation
A. Naturally acquired active immunity
This results from infection and the body’s own immune response—not applicable to newborns.
B. Artificially acquired passive immunity
This comes from injection of antibodies (e.g., immunoglobulins)—not from the mother.
C. Naturally acquired passive immunity
This is passed from mother to child through the placenta (IgG antibodies) and via breast milk (IgA).
D. Artificially acquired active immunity
This comes from vaccines that stimulate the body to produce its own antibodies.
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