microbiology intro

Question 1

microbiology

Answer 1

1) study of microorganisms
2) sub disciplines include bacteriology, virology, mycology

Question 2

microorganisms

Answer 2

1) very small in size
2) human cell is 10-100 microns
3) viruses are 20-200 nm
4) bacteria are 2-3 microns

Question 3

good microbes

Answer 3

1) probiotics
2) make enzymes for making food
3) medications that are isolated from them

Question 4

the bad

Answer 4

1) infectious diseases
- pathogenic microorganisms in a human or other animal host
2) dental caries, periodontitis, viral infections, varicella, oral candidiasis, angular cheilitis

Question 5

mycobacterium TB

Answer 5

1) primarily targets the lungs but can involve
- oral cavity
- skeletal system
2) primary TB is onset of clinical disease within 12 mo
- most people in US get better, unless it becomes disseminated TB
- occur within weeks of the primary infection

Question 6

ulcerative lesions

Answer 6

1) ulcerative lesions on tongue
- histoplasmosis
- TB
- oral cancer linked to virus
- recurrent aphthous stomatitis
- traumatic ulceration

Question 7

botox

Answer 7

1) for forehead wrinkles
2) for TMD

Question 8

high microbial load

Answer 8

1) >700 specials
2) cuts and minor surgery rarely lead to infection
3) due to immune system

Question 9

immune system

Answer 9

1) innate and acquired
2) if not functioning normally
- autoimmunity
- allergy
- cancer

Question 10

periodontitis

Answer 10

1) alveolar bone loss is a hallmark of periodontitis progression
2) RANKL induced osteoclast development
- from osteoblasts

Question 11

HIV positive has reduced immune system

Answer 11

1) CD4+ Tcell numbers are low
2) can manifest as perio, lymphoma, kaposis, etc.