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Questions and Answers
What effect do Salmonella trigger in the body?
What effect do Salmonella trigger in the body?
- Inflammatory processes and hypersecretion of fluids (correct)
- Decrease in inflammatory responses
- Reduction of fluid secretion
- Direct destruction of epithelial cells
In what part of the immune cells can Salmonella persist?
In what part of the immune cells can Salmonella persist?
- In the plasma membrane of fibroblasts
- In the nucleus of lymphocytes
- Inside the phagosomes of macrophages (correct)
- In the cytoplasm of neutrophils
How do Salmonella enter the body's circulatory systems?
How do Salmonella enter the body's circulatory systems?
- By crossing the epithelial cell membrane (correct)
- By breaking down the epithelial membrane
- Through direct injection into the bloodstream
- By hitching a ride on red blood cells
What is the primary consequence of Salmonella entering the bloodstream?
What is the primary consequence of Salmonella entering the bloodstream?
What role do macrophages play in the context of Salmonella infection?
What role do macrophages play in the context of Salmonella infection?
Which type of sample is mentioned for testing?
Which type of sample is mentioned for testing?
What is the shape of the organism described?
What is the shape of the organism described?
Which characteristic describes the described organism in terms of spore formation?
Which characteristic describes the described organism in terms of spore formation?
What type of staining characteristic does the organism exhibit?
What type of staining characteristic does the organism exhibit?
Which of the following best describes the organism's morphology?
Which of the following best describes the organism's morphology?
What type of environments are Aeromonas hydrophila and Plesiomonas shigelloides associated with?
What type of environments are Aeromonas hydrophila and Plesiomonas shigelloides associated with?
What is one of the health issues caused by Aeromonas hydrophila and Plesiomonas shigelloides?
What is one of the health issues caused by Aeromonas hydrophila and Plesiomonas shigelloides?
Which of the following statements is true regarding Aeromonas hydrophila?
Which of the following statements is true regarding Aeromonas hydrophila?
Which organism is NOT associated with marine environments according to the content?
Which organism is NOT associated with marine environments according to the content?
Aeromonas hydrophila and Plesiomonas shigelloides are commonly linked to which food type?
Aeromonas hydrophila and Plesiomonas shigelloides are commonly linked to which food type?
What action do the motile cells perform in the intestines?
What action do the motile cells perform in the intestines?
Which layer of the intestines do the motile cells travel through?
Which layer of the intestines do the motile cells travel through?
What is the main substance released by the motile cells upon attachment to epithelial cells?
What is the main substance released by the motile cells upon attachment to epithelial cells?
What is the significance of the motile cells attaching to epithelial cells in the intestines?
What is the significance of the motile cells attaching to epithelial cells in the intestines?
Which of the following best describes the motile cells mentioned in the content?
Which of the following best describes the motile cells mentioned in the content?
What is the shape of the gram-positive bacteria described?
What is the shape of the gram-positive bacteria described?
Which feature is characteristic of the described bacteria's spores?
Which feature is characteristic of the described bacteria's spores?
What is a distinctive characteristic of the cells of these gram-positive bacteria?
What is a distinctive characteristic of the cells of these gram-positive bacteria?
Which term best describes the appearance of these bacteria under a microscope?
Which term best describes the appearance of these bacteria under a microscope?
What classification do these bacteria belong to based on their staining properties?
What classification do these bacteria belong to based on their staining properties?
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Study Notes
Bacteria Causing Gastroenteritis
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Salmonella: Can trigger inflammatory processes and hypersecretion of fluids.
- Persists inside macrophages' phagosomes.
- Crosses epithelial cell membranes to enter the bloodstream and lymphatic system.
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Vibrio cholerae: Motile cells travel through intestinal mucous layer, attaching to epithelial cells and releasing cholera enterotoxin.
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Aeromonas hydrophila and Plesiomonas shigelloides: Associated with marine environments and raw seafood. Can cause gastroenteritis.
Sample Collection
- Blood and rectal swab samples are used for diagnosis.
Microscopic Observation
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Vibrio cholerae: Helical-shaped, non-spore-forming, Gram-negative bacteria.
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Clostridium perfringens: Gram-positive bacteria with long, irregular cells.
- Forms sub-terminal spores, appearing as drumstick or spindle-shaped.
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