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Questions and Answers
What is the main mechanism by which environmental influences can impair the respiratory defenses in swine?
What is the main mechanism by which environmental influences can impair the respiratory defenses in swine?
- Overwhelming the pulmonary macrophages
- Introducing primary respiratory pathogens
- Causing necrosis of the airway epithelium
- Binding to the cilia and causing ciliostasis (correct)
Which of the following primary respiratory pathogens is most commonly associated with the development of secondary bacterial bronchopneumonia in swine?
Which of the following primary respiratory pathogens is most commonly associated with the development of secondary bacterial bronchopneumonia in swine?
- PRRSV
- M. hyopneumoniae
- PCV2
- All of the above (correct)
Which of the following factors is LEAST likely to contribute to the overwhelming of respiratory defenses in swine?
Which of the following factors is LEAST likely to contribute to the overwhelming of respiratory defenses in swine?
- Exposure to primary respiratory pathogens (correct)
- Concurrent infections
- Nutritional deficiencies
- Stress
Which type of pneumonia in swine is characterized by cranioventral consolidation and suppurative bronchopneumonia?
Which type of pneumonia in swine is characterized by cranioventral consolidation and suppurative bronchopneumonia?
What is the primary role of pulmonary macrophages in the respiratory defense mechanisms of swine?
What is the primary role of pulmonary macrophages in the respiratory defense mechanisms of swine?
Which of the following environmental factors is MOST likely to contribute to the development of pulmonary edema in swine with respiratory disease?
Which of the following environmental factors is MOST likely to contribute to the development of pulmonary edema in swine with respiratory disease?
What is the major manifestation of enzootic pneumonia caused by Mycoplasma hyopneumoniae?
What is the major manifestation of enzootic pneumonia caused by Mycoplasma hyopneumoniae?
What is the outcome of Mycoplasma hyopneumoniae infection on macrophages?
What is the outcome of Mycoplasma hyopneumoniae infection on macrophages?
What is the result of Mycoplasma hyopneumoniae penetration into the respiratory epithelium?
What is the result of Mycoplasma hyopneumoniae penetration into the respiratory epithelium?
What is the characteristic incubation period of enzootic pneumonia caused by Mycoplasma hyopneumoniae?
What is the characteristic incubation period of enzootic pneumonia caused by Mycoplasma hyopneumoniae?
Which bacterial species is associated with toxemic bronchopneumonia in cases of enzootic pneumonia?
Which bacterial species is associated with toxemic bronchopneumonia in cases of enzootic pneumonia?
What is the main reason for a dry hacking cough in pigs affected by enzootic pneumonia?
What is the main reason for a dry hacking cough in pigs affected by enzootic pneumonia?
Which of the following best describes the role of the ApxI toxin in the pathogenesis of porcine pleuropneumonia?
Which of the following best describes the role of the ApxI toxin in the pathogenesis of porcine pleuropneumonia?
Which of the following best describes the initial stage of infection in porcine pleuropneumonia?
Which of the following best describes the initial stage of infection in porcine pleuropneumonia?
Which of the following is NOT a characteristic of the pathogenesis of porcine pleuropneumonia?
Which of the following is NOT a characteristic of the pathogenesis of porcine pleuropneumonia?
Which of the following best describes the role of macrophages in the pathogenesis of porcine pleuropneumonia?
Which of the following best describes the role of macrophages in the pathogenesis of porcine pleuropneumonia?
Which of the following clinical signs is NOT associated with porcine pleuropneumonia?
Which of the following clinical signs is NOT associated with porcine pleuropneumonia?
Which of the following best describes the role of cytokines in the pathogenesis of porcine pleuropneumonia?
Which of the following best describes the role of cytokines in the pathogenesis of porcine pleuropneumonia?
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