Chapter 20 Flashcards
Does that gastrointestinal system have normal biota?
Yes
Normal intestinal biota in cattle, poultry, rodents,
and reptiles. Known to cause gastrointestinal
distress.
Salmonella
Produces a Shiga Toxin that seems to be
responsible for more serious damage to the
intestine and systemic effects
Shigella
Able to superinfect the large intestine when broad
spectrum antibiotics have disrupted the normal
biota.
Clostridium difficile
Diarrhea contains flecks of mucus and is described
as “rice water stool”. Fluid losses of 1 liter per
hour have been reported.
Cholera
The Virulence of V.cholerae is due entirely to the
Cholera toxin (CT)
Refers to symptoms in the gut that are caused by a
preformed toxin of some sort.
Food poisoning
Produces two exotoxins: One causes a diarrheal like disease The other causes an emetic, or
vomiting disease
Bacillus cereus
Associated with eating foods such as custards,
sauces, cream pastries, processed meats, chicken
salad, or ham
Staphylococcus aureus
Causative agent of Gastritis and Gastric Ulcers
Helicobacter pylori
Helicobacter pylori Secretes _______ to neutralize
its surroundings for survival in the stomach
Urease
Causes inflammation of the parotid salivary
glands, producing the gopher like swelling of the
cheeks
Mumps
Inflammatory disease marked by necrosis of
hepatocytes and a mononuclear response that
swells and disrupts the liver architecture.
Hepatitis
Yellow tinge in the skin and eyes caused by
bilirubin accumulation in the blood and tissues
Jaundice
Hepatitis viruses transmitted through the fecal-oral
route
A and E
Symptoms of a Hepatitis A or E infection include:
Subclinical or accompanied by vague, flu-like
symptoms
Hepatitis viruses transmitted via blood and other
bodily fluids.
B, C and D
This Virus Can propagate only in the presence of
HBV
Hepatitis D virus
This virus causes direct damage to liver cells and
in a small population of individuals can lead to an
chronic infection.
Hepatitis B virus
Liver failure from hepatitis ____is one of the most
common reasons for liver transplants in the U.S.
C
This Hepatitis virus is prone to chronic infections
in most individuals infected and can lead to cancer
Hepatitis C virus
