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Questions and Answers
What is the primary condition for non-invasive bacteria to cause diseases?
What is the primary condition for non-invasive bacteria to cause diseases?
- When they transfer to other body sites or tissues outside their normal intestinal sites (correct)
- When the host's immune system is overly active
- When they are in a dormant state
- When they are in their normal intestinal sites
What is the result of localized clinically important infections?
What is the result of localized clinically important infections?
- The host's immune system becomes stronger
- The bacteria become invasive
- The bacteria are eliminated from the body
- The bacteria reach the bloodstream and cause sepsis (correct)
What is a characteristic of non-invasive bacteria?
What is a characteristic of non-invasive bacteria?
- They can cause disease in their normal intestinal sites
- They cause diseases only when they transfer to other body sites or tissues (correct)
- They are always pathogenic
- They are never found in the bloodstream
What is a consequence of inadequate host defenses?
What is a consequence of inadequate host defenses?
What is the relationship between non-invasive bacteria and the bloodstream?
What is the relationship between non-invasive bacteria and the bloodstream?
What is a possible complication of syphilis in the patient?
What is a possible complication of syphilis in the patient?
What is the course of secondary lesions in patients with syphilis?
What is the course of secondary lesions in patients with syphilis?
What is a rare but possible complication of syphilis?
What is a rare but possible complication of syphilis?
What is a possible manifestation of syphilis in the liver?
What is a possible manifestation of syphilis in the liver?
What is a possible complication of syphilis in the bones?
What is a possible complication of syphilis in the bones?
What is the primary reason why Treponema pallidum cannot be investigated using conventional lab techniques?
What is the primary reason why Treponema pallidum cannot be investigated using conventional lab techniques?
Why is it impossible to culture Treponema pallidum in a laboratory setting?
Why is it impossible to culture Treponema pallidum in a laboratory setting?
What is a characteristic of Treponema pallidum that makes it difficult to study?
What is a characteristic of Treponema pallidum that makes it difficult to study?
Why is it necessary to use non-conventional methods to study Treponema pallidum?
Why is it necessary to use non-conventional methods to study Treponema pallidum?
What is a limitation of studying Treponema pallidum in a laboratory setting?
What is a limitation of studying Treponema pallidum in a laboratory setting?
What is the primary mechanism by which oral bacteria enter the bloodstream?
What is the primary mechanism by which oral bacteria enter the bloodstream?
What is the term for the inflammation of the inner lining of the heart, which can be caused by oral bacteria in the bloodstream?
What is the term for the inflammation of the inner lining of the heart, which can be caused by oral bacteria in the bloodstream?
What is the term for a localized collection of pus that can occur in distant organs as a result of oral bacteria in the bloodstream?
What is the term for a localized collection of pus that can occur in distant organs as a result of oral bacteria in the bloodstream?
Which of the following is NOT a common site for oral bacteria to enter the bloodstream?
Which of the following is NOT a common site for oral bacteria to enter the bloodstream?
What is the primary reason why oral bacteria are not typically found in distant organs?
What is the primary reason why oral bacteria are not typically found in distant organs?
What is the primary function of teeth in relation to microorganisms?
What is the primary function of teeth in relation to microorganisms?
What is the composition of dental plaque?
What is the composition of dental plaque?
What is the term used to describe the accumulation of microorganisms on teeth and dentures?
What is the term used to describe the accumulation of microorganisms on teeth and dentures?
What is a characteristic of the microorganisms that accumulate on teeth and dentures?
What is a characteristic of the microorganisms that accumulate on teeth and dentures?
What is the result of the accumulation of microorganisms on teeth and dentures?
What is the result of the accumulation of microorganisms on teeth and dentures?
Study Notes
Non-invasive Bacteria
- Non-invasive bacteria cause diseases only when they transfer to other body sites or tissues outside their normal intestinal sites or other less common intestinal sites.
Infections and Complications
- When normal host defenses are inadequate, localized clinically important infections can result, leading to sepsis.
- The bacteria may cause secondary lesions, such as syphilitic meningitis, chorioretinitis, hepatitis, nephritis, or periostitis.
- These secondary lesions can subside spontaneously.
Characteristics of Treponema Pallidum
- Treponema pallidum cannot be cultured in the lab because it cannot survive outside of mammalian cells.
- As a result, it cannot be investigated using conventional lab techniques.
Microorganisms and Disease
- The presence of microorganisms at sites not normally accessible to them can cause disease, such as when oral bacteria enter the blood stream following tooth extraction or other traumas.
- This can lead to abscesses or endocarditis in distant organs.
Dental Plaque and Microorganisms
- Teeth (and dentures) allow the accumulation of large masses of microorganisms (predominantly bacteria) and their extracellular products.
- These accumulated microorganisms and products are termed dental plaque.
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Description
This quiz covers non-invasive bacteria that cause diseases when they transfer to other body sites or tissues, and the infections and complications that can result.
