Chapter 25 Flashcards
What is the route of transmission for microbial diseases of the digestive system?
fecal oral route
What is included in the GI tract?
mouth, pharynx, esophagus, stomach, small intestine, large intestine
What is included in the Accessory organs?
teeth, tongue, salivary glands, liver, gall bladder, pancreas
Where is the main place normal flora is found?
In large intestine, like E. coli
What is Dental Caries?
tooth decay
What bacteria causes dental caries?
S. mutans
What causes plaque?
an accumulation of microorganisms
What are treatments for cavities?
penicillin, root canal if necessary
How can you prevent cavities?
brushing, flossing, getting regular professional dental cleanings
What is Peridontal Disease?
inflammation and degeneration of structures that support the teeth.
Define Gingivitis.
inflammation of the gums (typically more superficial); common symptom is bleeding while brushing teeth
Define Periodontitis.
chronic Gingivitis that leads to tooth loss at an older age.
Infection
lower digestive system
colonization, penetration, and multiplication of microorganisms in intestinal mucose cell; may be enterotoxins; may be septicemia; S. typhi; E. coli
Intoxication
lower digestive system
preformed toxin, ingested, S. aureus; sudden diarrhea, abdominal cramps, nausea, vomiting
What causes Staphylococcal food poisoning?
Staphylococcus aureus
How can you kill the toxin in Staphylococcal food poisoning?
heat stable; boil for 30 mins
What is the incubation period for Staphylococcal food poisoning?
1-6 hrs
What are the symptom of Staphylococcal food poisoning?
nausea, vomiting, diarrhea
Staphylococcal food poisoning is self limiting meaning….
it goes away on it’s own after 24 hrs.
All Salmonella are considered ___________.
pathogenic
There are ____ types of Salmonella.
2543
What kind of food is Salmonella gotten from?
meat products, eggs
__ degrees Celsius destroys all Salmonella organisms.
68
Typhoid fever is caused by what?
Salmonella typhi
How can Typhoid fever be prevented?
proper sewage treatment (not often found in developed countries)
What is the treatment for Typhoid fever?
3rd generation Cephalosporins
What bacteria is causes Bacillary Dyscentery?
Shigella dyscentery
What is the main difference between diarrhea and dyscentery?
diarrhea- watery feces
dyscentery- mucousy, bloody feces
What causes Cholera?
Vibriocholerae; a Gram - curved rod.
In Cholera an __________ is produced.
enterotoxin
What is the treatment for Cholera?
rehydration and Tetracycline