Control Of Microbial Growth Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Infectious disease

A

Occurs when a microorganism in the body multiplies and causes damage to the tissue.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Pathogens

A

The microorganisms that cause infectious diseases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Opportunistic pathogens

A

The causative agents of infectious diseases caused by microorganisms normally present or on in the body that will not cause harm, unless favourably conditions exist for them to express their disease producing potential.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Endogenous diseases

A

Are causes of microorganisms in or on the body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Exogenous diseases

A

Are caused by microorganisms not normally present on or in the body; will contaminate the body from the outside

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Toxigenic diseases

A

Exogenous microorganism is causing disease without entering and multiplying in the body (after eating food, in which mos have multiplied and produce toxins- botulism, staphylococcus food poisoning.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Bacteriophage

A

Viruses infect bacteria were discovered in 1915 and in 1922

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Prion

A

Infection agent, composed entirely of protein, causing a rare degenerative brain disease in humans called creutzfeldt- jacob.
Prions are not microorganisms; prion diseases are usually rapidly progressive, and always fatal.
In animals cause bovine spongiform encephalopathy, called “ mad cow disease”.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

4 Routes of entry into the body

A

1) Inhalation (breathing aerosol particles from Prophy angle)
2) ingestion (swallowing droplets of saliva/blood spattered into mouth)
3) mucous membranes (droplets of saliva/blood spattered and eyes, nose, or mouth)
4) breaks in the skin (directly touching microorganisms or being spattered with saliva/blood onto skin with cuts/abrasions/punctures with contaminated sharps.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Spores

A

One of the resistant forms of life against heat, drying and chemicals
Bacteria that develop a defence mechanism against death

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Bacterial flora

A

Normally resides honour in body without causing harm
Has disease producing potential

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Prodromal stage

A

Early symptoms (slight fever, headache, upset, stomach)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Acute stage

A

Very ill (host displays maximal symptoms of the disease)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Convalescent stage

A

Recovery phase (infectious agents are still present and may spread.)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Innate host defences

A

1) Physical barriers (unbroken skin, mucous membranes, respiratory)
2) mechanical barriers (nose hair, coughing, sneezing, washing of secretions and excretions (tears and urine), sticky mucus (traps).
3) antimicrobial chemicals (hydrochloric acid (stomach), lysosome, interferon (resistant to virus replication cells)
4) cellular barriers (WBC (neutrophils, and macrophages —> phagocytes.)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly