Flashcards in Test 2 Deck (86)
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1
Concerning host-parasite relationships:
*Commensals may become parasitic, depending on location in body
*Normal flora of the G.I. tract may be mutualistic symbionts
*what may be "normal flora" for one person may cause disease in another
*Being immunocompromised may change the symbionic relationship
2
Concerning the establishment of an infection:
Pathogens usually have virulence factors that promote colonization in tissues
3
Concerning patterns of disease transmission:
Remember the five Fs (fingers, feces, food, flies, and fomites)
*House flies are major mechanical vecotrs of disease
*Beware of fomites such as combs, throat aerosols, blankets, and door-knobs
*food borne infections are most often due to poor personal or community hygiene
4
Concerning staphylococcus spp.
These bacteria are serious agents of food poisoning
5
Concerning TSST-1 exotoxin:
It is a prime example of a superantigen
6
Concerning disease vectors:
As a general rule, pathogens transmitted by mosquitoes must have some portion of their life-cycle occur in the insect
7
Heart valve damage
Strept viridans group
8
Food poisoning
staphylococcus spp.
9
Puerperal mastitis
Staphylococcus spp
10
Exfoliatin
Scalded skin syndrome
11
Which of the following is incorrect
Heart valve damage=strept viridans group
Food poisoning=streptococcus spp.
Puerperal mastitis=Scalded skin syndrome
B- Food poisoning = Staphylococcuss spp
NOT Streptococcus spp
12
Erythrogenic toxin
Scarlatina
13
Strept Exotoxin A
Necrotizing fasciitis
14
Middle ear infection
Streptococcus pneumoniae
15
TSST-1
Toxic Shock syndrome
16
Which of the following are incorrect
Erythrogenic toxin=Scarlatina
Strept Exotoxin A=Necrotizing fasciitis
Middle ear infection=Streptococcus pneumoniae
TSST-1=Erythroblastosis fetalis
D- TSST-1 = Toxic shock syndrome
NOT Erythroblastosis fetalis
17
Erysipelas
Strep. Pyogenes
18
Acute glomerulonephritis
Strep-throat
19
Nosocomial infection
Acquired in hospital
20
Endogenous infection
Strept pneumonia
21
Rheumatic fever
Strept throat
22
Acute glomerulonephritis
Type 2 & 3 hypersensitivity
23
Endocarditis
Strept viridans group
24
This organism is the most important biological disease vector:
Mosquito
25
The establishment of an infection requires three main events or processes
1) Tissue invasion
2) Colonization
3) Immune Avoidance
26
Name four possible routes for endogenous infection
Anus to Urethra
Feces to mouth
Upper respiratory tract to lower respiratory tract
Moth to open woulnd
***
Anus-mouth
Mouth-damaged skin
Vaginal-blood stream(child birth)
Bowel-Abdomen, damage to the parietal layers
27
THe importance of an infectious disease can be determined by a specific relationship between 2 epidemiologic parameters...
Morbidity and Mortality
28
Give 3 characteristics of outdoor air that makes it generally less likely to transmit diseases than indoor air
1) Dryer
2) More UV rays
3) Ozone layer
29
Normal flora are bacteria that routinely grow on or in the body. Where in the body does one find the most different kinds of bacteria
The mouth, about 20 kinds
30
