Final

Question 1

Periodontal disease

Answer 1

Inflammatory gums cause plaque

Old people

Question 2

Acute necrotizing ulcerative gingivitis

Answer 2

Bleeding painful guns
Broken teeth
Bad breath
Destroy tissues

Question 3

Protozoan diseases

Answer 3

Trophozoites
Cysts
Diarrhea
Fecal contaminated water
Giardiasis, ambesias, c

Question 4

Helicobacter pylori gastritis

Answer 4

Asymptomatic 
Microaerophillic 
Produce urease to survive stomach acids 
Leads to pelpic ulcers and stomach cancer
Fecal oral

Question 5

Oral herpes

Answer 5

Virus
Cold sores
Cold sores and skin/mucous/saliva carry virions

Question 6

Mumps

Answer 6

Painful swelling of one or both parotid glands
Painful enlargement of the testicles are the in men and pelvic pain in women
Humans are the only source
No treatment, vaccine available

Question 7

Enterotoxins

Answer 7

Increase secretion of water and electrolytes

Question 8

Cytotoxins

Answer 8

Cell death

Question 9

Cholera

Answer 9

Potentially fatal watery diarrhea
Dehydration, shock, organ failure, death
Oral rehydration therapy; replacing fluids

Vibrio cholerae; alkaline
AMP activates ion transport channels in the membrane causing CL and other electrolytes and water to pour out of cell
Caused by the AB toxin
Bacteriophage infects v cholerae, causes lysogenic conversion

Fecally contaminated water

Question 10

Shigellosis

Answer 10

Dysentery, joint pain

Pass through intestinal barrier in M cells
Actin tails spread, invasion and spread leads to death
Inflammation and ulcerations of intestinal lining
Shiga toxin
Fecal oral
Human source

Question 11

E.coli Gastroenteritis

Answer 11

Ecoli strains with virulence factors cause UTI, septicemia, meningitis

Shiga toxin causes Hemolytic uremic syndrome: anemia due to lysis of red blood cells and kidney failure

Colonize small intestine and cause watery diarrhea

Colonize large intestine and cause dysentery

Question 12

Salmonella gastroenteritis

Answer 12

Feces in food (poultry)
Diarrhea
High dose

Question 13

Enterobacteriaceae

Answer 13

Shigella
Ecoli
Salmonella

Question 14

Typhoid and paratyphoid fevers

Answer 14

Enteric fevers
Systemic diseases that originate in the intestine

Salmonella typhoon

Question 15

Clostridium difficile infection

Answer 15

Antibiotic associated diarrhea
Colitis
Toxins cause lethal effects

Question 16

Notorious

Answer 16

Single stranded RNA
Shorter incubation than rotavirus
Symptoms (diarrhea vomiting) lasts shorter than rotavirus
No vaccine

Question 17

Rotavirus

Answer 17

Is non enveloped
Rotavirus has attenuated vaccine
Rotavirus: children
Fecal oral

Question 18

Hepatitis

Answer 18

Inflammation of liver
A- non eve loped, single RNA, fecal oral, not cronic (Can be cured), inactive vaccine, immune globin

B- enveloped, double DNA, blood/semen, chronic, leads to cirrhosis and cancer, crosses placenta (baby in trouble), subunit vaccine

C-enveloped single RNA, blood possible semen, Asymptomatic, liver damage leads to cirrhosis and cancer, no vaccine

D- causes worsening of prior Hep disease

E- same as hep A but it is severe in pregnant women

Question 19

Dental carries

Answer 19

Stept mutans