3.1.1 Anaerobes

Question 1

Organisms exist outside of the bodies of animals?

Answer 1

Exogenous

Question 2

Example of bacteria that contaminates existing wound or puncture by object?

Answer 2

Clostridium tetani (Tetanus)
Clostridium perfringens (Gas gangrene)

Question 3

Example of bacteria that infects through ingestion of preformed toxins?

Answer 3

Clostridium botulinum
Clostridium perfringens

Question 4

Examples of bacteria that infects through colonization of GI tract?

Answer 4

C. botulinum

Question 5

Organisms Exist inside the bodies of animals

Answer 5

Endogenous

Question 6

Example of bacteria in the skin that gain access to normally sterile site?

Answer 6

Propionibacterium acnes
Peptostreptococcus

Question 7

Example of bacteria in the Respiratory tract that gain access to normally sterile site

Answer 7

Prevotella
Porphyromonas
Fusobacterium
Anaerobic cocci

Question 8

Example of bacteria in the GIT that gain access to normally sterile site

Answer 8

Bacteroides fragilis
Clostridium difficile
Bifidobacterium
Eubacterium

Question 9

Example of bacteria in the GUT that gain access to normally sterile site

Answer 9

Bacteroides
Prevotella
Fusobacterium
Lactobacillus
Anaerobic cocci

Question 10

What are the factors that predispose patients to anaerobic infections?

Answer 10

Trauma
Vascular stasis
Decreased oxygenation of tissue
Decreased in the redox potential of the tissue

Question 11

Indications of involvement of anaerobes in infections in infections processes

Answer 11

Infection in close proximity to a mucosal surface
Presence of foul odor
Presence of large quantity of gas
Presence of black color or brick red fluroscence
Presence of sulfur granules

Question 12

Promotes abscess formation, antiphagocytic function

Answer 12

Polysaccharide capsule

Question 13

Fimbriae, fibrils enable organisms to adhere to cells surface

Answer 13

Adherence factors

Question 14

Catalyze the degradation of collagen

Answer 14

Collagenases

Question 15

Toxic to specific types of cells

Answer 15

Cytotoxins

Question 16

Destroy / Hydrolyzes DNA

Answer 16

DNases

Question 17

Toxic to cells of the intestinal mucosa

Answer 17

Enterotoxins

Question 18

Lyse Red Blood cells liberating hemoglobin

Answer 18

Hemolysis

Question 19

Catalyzes the hydrolysis of hyaluronic acid, the cement substance of tissues

Answer 19

Hyaluronidase

Question 20

Catalyze the hydrolysis of ester linkages between fatty acids and glycerol of triglycerides and phosphlipids

Answer 20

Lipase

Question 21

Destroy or Disrupt nerve tissue

Answer 21

Neurotoxins

Question 22

Catalyze the spiting of host phospholipis

Answer 22

Phospholipases

Question 23

Split host proteins by hydrolysis of peptide bonds

Answer 23

Proteases