Ch. 25: Microbial Diseases Of The Digestive System

Question 1

What causes dental caries?

Answer 1

Bacteria in the mouth

Question 2

What pathogen causes dental caries?

Answer 2

Primarily Streptococcus mutans

Question 3

What do the bacteria do in the mouth to develop the caries?

What happens if ignored?

Answer 3

• They first form biofilms, which become plaque

* If ignored and gets calcified it becomes calculus.

Question 4

Why don’t you want to caries getting into the pulp?

Answer 4

Because it has access to the bloodstream, which are where the capillaries are

Question 5

If cavities are ignore they can progress to?

Answer 5

Periodontal Disease

Question 6

What’s a common beginning indicator of gingivitis?

Answer 6

Gums that bleed easily

Question 7

What pathogen causes periodontal disease?

Answer 7

Primarily Porphyromonas spp.

Question 8

What pathogen causes salmonellosis?

Answer 8

Salmonella enteric a

Question 9

What does salmonella like to go on?

Answer 9

• Eggs
• Some dairy products
• Reptiles (turtles)

Question 10

What is cholera caused by?

Answer 10

Vibrio cholera

Question 11

Why is ORT responsible for saving more lives than IRT (Intravenous Rehydration Therapy)?

Answer 11

Because most people don’t have access to hospitals, they can do it at home (parts of the world with extreme poverty)

Question 12

What’s the most successive treatment globally for cholera?

Answer 12

ORT (Oral Rehydration Therapy)

Question 13

What is salmonella a member of?

Answer 13

• Entrobacteria, but not a normal member of the commensals

* You get sick not but overgrowth but by the introduction of salmonella in the G.I. tract

Question 14

H. pylori is the cause of?

Answer 14

Peptic ulcers (or peptic ulcer disease)

Question 15

H. pylori love to produce what?

Answer 15

Ammonia (NH3^+ + H), which gobbles up protonsmade by the stomach mucosa

Question 16

Clostridium Difficile Associated Diarrhea (CDAD) is mostly spread by?

Answer 16

Spores through fecal contamination or vomit

Question 17

What’s the hyper-virulent strain of CDAD?

Answer 17

• BI/NAP1/027

* It produces more toxins A and B, it can hyper sporulate and secrete bi-valent toxins which others don’t

Question 18

What do hepatitis B and C have common?

Answer 18

• They infect the liver
• Responsible for end-stage liver infection and cancer
• Chronic Infection

Question 19

Is there a vaccine for hepatitis B?

Answer 19

Yes, given at birth

Question 20

How do you get hepatitis B and C?

Answer 20

Hep B: Blood transfusion and sharing needles

Hep C: Bodily fluids (sexually)

Question 21

Noro Virus

Answer 21

• # 1 cause of food borne Viral Gastroenteritis (Infection of GI)
• HAI
• Cruise ship passengers

Question 22

Ascariasis

Answer 22

• Helminths (round worm) that begins in the intestinal tract
• Protozoan disease
• 1.5 billion infected

Question 23

If you’ve had hepatitis for more than six months you’re considered?

Answer 23

Chronic
15% progress to chronic stage
Hep B infections are self limiting

Question 24

Dental carries are also known as?

Answer 24

Cavities (caries) and plaque

Question 25

Dysentery

Answer 25

Diarrhea accompanied by blood and mucus

Question 26

Types of Periodontal Disease

Answer 26

Gingivitis and periodontitis

Question 27

What toxin does EHEC produce?

Answer 27

Shiga toxin, causes watery diarrhea

Question 28

Dysentery

Answer 28

Diarrhea accompanied by blood and mucus

Question 29

Types of Periodontal Disease

Answer 29

Gingivitis and periodontitis

Question 30

What toxin does EHEC produce?

Answer 30

Shiga toxin, causes watery diarrhea

Question 31

Cause of dental caries?

Answer 31

Lactobacillus and strep mutans

Question 32

Process of Dental Caries

Answer 32

Forms Biofilm -> Plaque -> Calculus -> Carries -> Cavities

Question 33

Salmonellosis can induce ________ if in the bloodstream.

Answer 33

Septic shock

Question 34

Where can you get Salmonellosis from?

Answer 34

Egg, diary, reptiles (turtles)