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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

This man discovered the first antibiotics

Flemming