Test 6 Ch 17,18 Flashcards Preview

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Flashcards in Test 6 Ch 17,18 Deck (36)
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1

4 infectious agents:

Bacteria
Virus
Fungi
Protozoa

2

These are single celled organizers that are prokaryotic which lack a nucleus

Bacteria

3

Size and shape of bacterium by gram staining

Morphology

4

Medically important bacteria can be classified into 3 morphologies:

Cocci or spheres, bacilli or rods, and spirals

5

2 bacteria able to produce endospores are ???

*theyare highly resistant to external environment

Bacillus and clostridium

Ex: strep throat, bacterial pneumonia, and food poisoning

6

Pathogen that are neither eukaryotic or prokaryotic. Carries its own genetic form:

Virus’

7

Viral infection is the result of a viral particle that attaches to a host cell to its genome is called ?

Virion

8

An example of a latent or dormant viral infection is

Herpes simplex virus

9

This pathogen is made of eurkaryotic organisms with a nucleus

Fungi
Such as atheleted foot

10

Medically important fungi are mostly DIMORPHIC (ability to grow in 2 forms) which are:

Yeast
Mold

11

This pathogen is unicellular and do not possess a cell wall. Generally eukaryotic

Protozoa

12

Fungi are classified in 4 different diseases which are

Superficial infection-skin
Cutaneous infection-keratinized tissue
Subcutaneous fungal infection-trauma to skin
Systemic infection -circulatory and lymphatic

13

Protozoa are classified in 3 motilities:

Ameboid locomotion-slow
Flagellum-long
Cilia -tail

14

Encounter
Entry
Spread
Multiplication
Damage
Outcome

Are?

6 processes in getting an infectious disease

15

For infection to spread, 4 factors are involved:

Host
Infectious organism
Mode of transmission
Reservoir

16

Examples of Direct host to host transmission:

Example of indirect transmission:

Hand holding, coughing, sexual contact

Vector -skeeters, ticks, fleas
fomite - food water gloves

17

Common fomites in a medical setting ??

All kinds of Catheters

18

Two blood borne pathogens that are a concern in hospitals:

Hep B-affects liver
HIV-immune system / T cells

19

Our body produces 3 defense mechanisms to protect us which include:

Mechanical -shedding cells

Chemical-urine, teArs, mucous

Cellular -phagocyte remove foreign particles (inflammatory response)

20

Most effective way of sterilization

Moist heat such as autoclave

21

Involves only moderate heating followed by rapid cooling

Pasteurization
Such as milk, beer, n wine

22

Maximal killing of microbes can be done by

UV light

23

Recapping needles should be avoided but if you must perform it; use the

One handed scoop technique

24

A physician induced infection; common density

Iatrogenic

25

Organism found on you or patient

Flora

26

Hospital acquired infections from equipment, instruments, surfaces, etc

Nosocomial

27

A reduction of #’s of Infectious Agents

Medical Asepsis

28

Absolutely killing ALL life forms

Sterilization

29

Chemicals that alter the environment

Disinfectants

30

A Feeding a tube is called a

Lumen