10 Questions
What is an example of an anaerobic organism that can cause infection if displaced into the bloodstream or surrounding tissue following surgery or injury?
Bacteroides fragilis
Why is the skin considered a portal of exit for pathogens?
Any break in the integrity of the skin allows pathogens to exit the body.
How are respiratory tract pathogens, such as the influenza virus, released from the body?
Respiratory tract pathogens are released from the body when an infected person sneezes or coughs.
What is the ideal temperature range for most human pathogens to grow?
The ideal temperature for most human pathogens is 20°C to 43°C (68°F to 109°F).
What is the normal state of urine in the urinary tract?
Normally, urine is sterile.
What can happen when a patient has a urinary tract infection?
When a patient has a urinary tract infection, the sterile urine can become contaminated during urination.
What is the role of mucous membranes in the body?
Mucous membranes allow moist drainage from the body, which can serve as a portal for pathogens to exit.
How do cold temperatures affect the growth and reproduction of bacteria?
Cold temperatures tend to prevent the growth and reproduction of bacteria (bacteriostasis).
What is the difference between a bacteriostatic and a bactericidal temperature or chemical?
A bacteriostatic temperature or chemical prevents the growth of bacteria, while a bactericidal one destroys bacteria.
Where can Bacteroides fragilis, an anaerobic organism, be found in the human body?
Bacteroides fragilis is part of the normal flora of the human colon, but can cause infection if displaced into the bloodstream or surrounding tissue.
Explore how the acidity of an environment influences the viability of microorganisms, and the pH range preferred by most microorganisms. Learn about the presence of normal flora and how certain organisms can act as pathogens in different individuals. This quiz is based on the fundamentals of nursing practice for semi-finals.
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