Test 6 Ch 17,18 Flashcards
4 infectious agents:
Bacteria
Virus
Fungi
Protozoa
These are single celled organizers that are prokaryotic which lack a nucleus
Bacteria
Size and shape of bacterium by gram staining
Morphology
Medically important bacteria can be classified into 3 morphologies:
Cocci or spheres, bacilli or rods, and spirals
2 bacteria able to produce endospores are ???
*theyare highly resistant to external environment
Bacillus and clostridium
Ex: strep throat, bacterial pneumonia, and food poisoning
Pathogen that are neither eukaryotic or prokaryotic. Carries its own genetic form:
Virus’
Viral infection is the result of a viral particle that attaches to a host cell to its genome is called ?
Virion
An example of a latent or dormant viral infection is
Herpes simplex virus
This pathogen is made of eurkaryotic organisms with a nucleus
Fungi
Such as atheleted foot
Medically important fungi are mostly DIMORPHIC (ability to grow in 2 forms) which are:
Yeast
Mold
This pathogen is unicellular and do not possess a cell wall. Generally eukaryotic
Protozoa
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
Protozoa are classified in 3 motilities:
Ameboid locomotion-slow
Flagellum-long
Cilia -tail
Encounter Entry Spread Multiplication Damage Outcome
Are?
6 processes in getting an infectious disease
For infection to spread, 4 factors are involved:
Host
Infectious organism
Mode of transmission
Reservoir