4/18/17 Oral Microbiology TEST #4

Question 1

What is the most common organism that causes impetigo?

Answer 1

-Staph. aureus

Question 2

Besides staph aureus what is another common organism that causes impetigo?

Answer 2

-Strep. pyogenes

Question 3

What causes tonsillitis and pharyngitis in bacteria form?

Answer 3

-Group A beta hemolytic streptococci

Question 4

Are tonsillitis and pharyngitis caused more by viruses or bacteria?

Answer 4

-Virus

Question 5

What is a potential sequelae of strep throat?

Answer 5

• Scarlet Fever

- Rheumatic fever

Question 6

What does scarlet fever look like in children?

Answer 6

-There tongue looks like a strawberry

Question 7

What causes scarlet fever?

Answer 7

-Disseminated Group A beta-hemolytic streptococcal infection

Question 8

What is the disseminated form of strep throat?

Answer 8

• Scarlet fever

- Rheumatic fever

Question 9

What causes Diphtheria?

Answer 9

-Cornebacterium diphtheriae

Question 10

What is the sole reservoir of Diphtheria?

Answer 10

-Humans

Question 11

What does diphtheria affect first?

Answer 11

-Affects mucosal tissues first

Question 12

What causes the tissue necrosis in diptheria?

Answer 12

-Lethal exotoxin produced by Cornebacterium

Question 13

T/F Syphilis is a painful ulceration

Answer 13

• False

- Painless

Question 14

What causes syphilis?

Answer 14

-Treponema pallidum

Question 15

Primary syphilis is characterized by the ___ that develops at the site of inoculation.

Answer 15

-Chancre

Question 16

Who is syphilis more common in?

Answer 16

• Men

- African Americans

Question 17

What is scattered foci of granulomatous inflammation (intraoral lesions usually affect the palate or tongue) known as?

Answer 17

-Gumma

Question 18

What causes Gonorrhea?

Answer 18

-Neisseria gonnorhoeae

Question 19

What are the signs of gonorrhea?

Answer 19

-Purulent discharge

Question 20

What type of stain do you used to identify Mycobacterium tuberculosis?

Answer 20

-Acid fast stain

Question 21

What is a lymphadenopathy of the neck that usually results from mycobacterium “TB of the neck” known as?

Answer 21

-Scrofula

Question 22

What is the most common cause of collapse of the bridge of the nose?

Answer 22

-Leprosy

Question 23

What causes leprosy?

Answer 23

-Mycobacterium leprae

Question 24

T/F Leprosy has a very low infectivity rate

Answer 24

True

Question 25

Where are most of the cases of actinomycosis diagnosed?

Answer 25

-Cervicofacial region

Question 26

What bacterial infection has “sulfur granules” with a suppurative reaction with discharged yellow material?

Answer 26

-Actinomycosis

Question 27

What is the most common cause of regional lymphadenopathy is children?

Answer 27

-Cat-scratch disease

Question 28

What causes Cat-scratch disease?

Answer 28

-Bartonella henselae

Question 29

What causes Candidiases?

Answer 29

-Candida albicans

Question 30

What are the two forms of Candidiasis?

Answer 30

• Yeast form - innocuous

- Hyphal form - invasion of host tissue

Question 31

What is the most common oral fungal infection in humans?

Answer 31

-Candidiasis

Question 32

What is the most common organisms to cause a sinus infection?

Answer 32

-Aspergillosis