CH 14 HW Flashcards Preview

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Flashcards in CH 14 HW Deck (55):
1

pathogenesis & virulence:

pathogenesis: can the microbe cause disease?
virulence: degree of pathogenicity, how able is the microbe to call disease?

2

vehicle & vector

vehicle: microbe passed to host via air, water, food or bodily fluid
vector: an animal ( usually arthropod) that transmits disease between hosts

3

mechanical vector & biological vector

mechanical: carries the pathogen outside body
biological: carries the pathogen inside the body; acts as host

4

reservoir & modes of transmission

reservoir: site in nature where pathogen resides as source for new infection
means of transmission: the way a microbe gets passed between hosts: contact, vehicle, vector

5

animal reservoir & zoonoses:

animal reservoir: contains pathogen as source of infection
zoonoses: disease spread from animal reservoir to human

6

disease & infection

disease: deviation from normal body function caused by infection
infection: microbe invades (multiplies & becomes established) in the tissues

7

I have such a headache:

symptom

8

My eyes are red:

sign

9

Subjective; felt by patient:

symptoms

10

I have itchy eyes:

symptom

11

I have a runny nose:

sign

12

released by gram (-) bacteria only

endotoxins

13

released by gram (+) bacteria only

neither

14

secreted by both gram (-) and gram (+) bacteria

exotoxins

15

is Lipid A from cell membrane released by dead bacteria

endotoxins

16

secreted by live bacteria

exotoxins

17

cell/organ/tissue specific

exotoxins

18

non specific

endotoxins

19

low toxicity, but may be fatal in high doses

endotoxins

20

. very dangerous – can cause systemic damage like fever and shock

endotoxins

21

toxic in low amounts

exotoxins

22

A kinase enzyme is released by certain bacteria to dissolve clots

extracellular enzymes

23

. A microbe secreting leukocidin to destroy phagocytes

antiphagocytic factor

24

. Helminth hooks and sucker

adhesion

25

Collagenase digesting major protein in connective tissue

. extracellular enzymes

26

A bacteria with a capsule composed in part of human molecules

antiphagocytic factor, adhesion

27

. A bacteria or virus with glycoprotein ligands

adhesion

28

. Cholera, a GI tract diarrheal disease, contracted from contaminated drinking water

vehicle

29

. West Nile Virus transmitted through mosquito bite

vector

30

. Fomites like needles, money or door handles

indirect contact

31

Mucus from sneeze 2 meters away

vehicle

32

HIV transmitted through blood transfusion

vehicle

33

Mother to child

direct contact

34

Cockroach with salmonella from rotting garbage crawling on your picnic food

vector

35

Fungal spores in air disrupted from earthquake

vehicle

36

Mucus from sneeze half a meter away

direct contact

37

Salmonella from contaminated cantaloupe

vehicle

38

Kissing

direct contact

39

Microbial infection confined to the portal of entry like a boil

local infection

40

Aerobic and anaerobic bacteria causing periodontal disease

mixed infection

41

Infection spreads to several sites and tissue fluids

systemic infection

42

Long term infection with hepatitis C

chronic infection

43

Initially a local infection but spreads

focal infection

44

Common cold short-lived effects

acute infection

45

The number of people diagnosed with mumps in Iowa this month

incidence

46

The rapid spread of mumps, suddenly, in Iowa

epidemic

47

Deviation of normal body functioning; disease

morbidity

48

. The SARS virus spreading from Asia to Canada

pandemic

49

People dying as a result of being infected with the West Nile Virus

mortality

50

AIDS can be passed on through human sexual intercourse

communicable

51

Host’s encounter with a microorganism always leads to infection

F (always) sometimes

52

An embryo is normally sterile

T

53

. An infection is spread from person to person by a carrier

T

54

. A disease is not likely to be communicable at all stages of infection

F (not)

55

. Commensalism is a symbiotic relationship where both organisms benefit

F (commensalism) mutualism