Chapter 14 Microbiology with disease by taxonomy

27 terms by ksedwards 

Create a new folder

Advertisement Upgrade to remove ads

three types of symbiosis

mutualism
parasitism
commensalism

organisms that live in and on the body

normal micobiota

both members benefit

mutualism

when a parasite benefits whie the host is harmed

parasitism

when one member benefits while the other is relatively unaffected

commensalism

the womb is an ___________, meaning free of microbes

axenic environment

the process by which pathogens attach to cells

adhesion

study of the cause of a disease

etiology

Kochs postulates

1. suspect pathogen must be present in every case of the disease
2.pathogen must be isolated and grown in pure culture
3. cultured pathogen must cause the disease when introduced into a healthy host
4. same pathogen must be reisolated from the diseased host

the ability of a microorganism to cause a disease

pathogenicity

the degree of pathogenicity is called

virulence

Endotoxin is also know as _______as is gram negative

Lipid A

the spread of pathogens via air, drinking water, and food as well as bodily fluids being handled outside the body

vehicle transmission

this involves the spread of pathogens to teh respiratory mucous membranes of a new host via an aerosol

airborne transmission

Vectors that not only transmit pathogens but also serve as hosts for the multiplication of a pathogen during some stage of its life cycle

Biological vector

Vectors that are not required as hosts by the pathogens they transmit;such vectors only passively carry pathogens on their feet or other body parts

mechanical vectors

The study of the location, course, and transmission of diseases within population

Epidemiology

three types of reservoirs

animal, human, nonliving

The mere presence of microbes in or on the body

contamination

when the organism evades bodys external defenses, multiplies and becomes established in the body

infection

Four major pathways for portals of entry

skin, mucous membrane, pacenta, parenteral route

virulence factors that contribute to virulence

adhesion, biofilms, extracellular enzymes, toxins, antiphagocytic factors.

collangenase and hyaluronase

breaks down collagen

coagulase

helps foreign object to enter blood stream

kinase

disolves cell membrane

Exotoxins classifications by locations

Neurotoxin
Enterotoxin
cytotoxin

Exotoxins classifications by structure & function

A-B toxin
membrane disruption
super antigens

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set