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42 Cards in this Set
- Front
- Back
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Two things leptospirosis causes
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- Renal lesions
- Liver lesions |
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What do bacterial septicemia cause in regards to the liver?
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Multifocal necrotizing hepatitis
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What do mycobacterial infections cause?
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Chronic granulomatous inflammation
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3 liver bacterial diseases
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- Liver abscesses
- Clostridial hepatitis - Tyzzer's Disease |
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Pathway for Liver abscesses caused by bacteria
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Grain overload --> increased ruminal production of VFAs --> ruminal acidosis --> loss of normal ruminal flora --> ruminal atony, inflammation, and mucosal erosion --> means for bacteria to enter portal circulation
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What is clostridial hepatitis known as?
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Black disease
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Two types of Clostridium that affect the liver
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- C. novyi
- C. haemolyticum |
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Which Clostridium species affects sheep?
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C. novyi
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Which Clostridium species affects cattle?
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C. haemolyticum
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Common name of C. novyi infection of liver
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Bacillary hemoglobinuria
- Redwater |
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Two signs of C. haemolyticum infection of the liver
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- Hemolysis
- Hemoglobinuria |
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What causes Tyzzer's Disease?
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Clostridium piliforme
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What species is affected by Clostridium piliforme?
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Equine (foals)
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Pathology of Clostridium piliforme
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Random areas of necrosis surrounded by inflammatory cells
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What do viral diseases typically cause in the liver?
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Random multifocal hepatic necrosis
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Two herpesviruses that cause liver disease
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- Equine herpes virus I
- Canine herpes virus |
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What's the causative agent of Infectious Canine Hepatitis?
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Causative canine adenovirus-1
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What does Equine herpes virus I infect?
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Equine fetuses
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What does Canines herpes virus infect?
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- Canine fetuses
- Canine neonates |
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Pathology of feline infectious peritonitis (2)
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- Fibrinous inflammatory reaction over the capsule of the liver
- Diffuse peritonitis |
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Pathology of fungal diseases of the liver
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Granulomatous inflammation
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Species affected by Eimeria stiedae
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Rabbits
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Species affected by Histomonas meleagridis
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Poultry
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Pathology of Histomonas meleagridis
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Necrotic hepatitis
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Nickname of Histomonas meleagridis infection
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Blackhead
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Pathology of visceral Leishmaniasis
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Hepatic involvement with multiple foci of granulomatous inflammation
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How do larval nematodes cause hepatic disease?
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Cause lesions during migration to final location
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What are multifocal lesions produced by larval ascarid migration in pigs called?
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Milk spots
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What nematode lives in the hepatic parenchyma?
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Capillaria hepatica
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2 trematodes that cause hepatic lesions
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- Fasciola hepatica
- Heterobilharzia americana |
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What disease condition does Heterobilharzia americana cause?
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Canine schistosomiasis
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Two types of cestodes that infect the liver
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- Cysticerci
- Hydatids |
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3 inflammatory diseases of unknown origin that affect the liver
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- Theiler's disease
- Chronic active hepatitis - Cholangiohepatitis |
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What is Theiler's disease AKA?
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Equine serum hepatitis
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Cause of Equine serum hepatitis
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injection with a biological product of equine origin
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2 symptoms of Equine serum hepatitis
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- Icterus
- Hepatic encephalopathy |
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Mortality rate of Equine serum hepatitis
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High
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Pathology of Equine serum hepatitis
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Centrilobular to massive hepatocyte necrosis
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Nickname for Equine serum hepatitis
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Dishrag liver
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What species is affected by chronic active hepatitis?
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Canine
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Pathology of chronic active hepatitis (3)
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- Piecemeal hepatocyte necrosis
- Lymphocytic inflammation - Fibrosis |
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What species of dog is chronic active hepatitis common in?
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Doberman Pinscher
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