Ch. 25: Microbial Diseases Of The Digestive System Flashcards Preview

Microbiology > Ch. 25: Microbial Diseases Of The Digestive System > Flashcards

Flashcards in Ch. 25: Microbial Diseases Of The Digestive System Deck (34):
1

What causes dental caries?

Bacteria in the mouth

2

What pathogen causes dental caries?

Primarily Streptococcus mutans

3

What do the bacteria do in the mouth to develop the caries?
What happens if ignored?

* They first form biofilms, which become plaque
* If ignored and gets calcified it becomes calculus.

4

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

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

5

If cavities are ignore they can progress to?

Periodontal Disease

6

What's a common beginning indicator of gingivitis?

Gums that bleed easily

7

What pathogen causes periodontal disease?

Primarily Porphyromonas spp.

8

What pathogen causes salmonellosis?

Salmonella enteric a

9

What does salmonella like to go on?

* Eggs
* Some dairy products
* Reptiles (turtles)

10

What is cholera caused by?

Vibrio cholera

11

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

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

12

What's the most successive treatment globally for cholera?

ORT (Oral Rehydration Therapy)

13

What is salmonella a member of?

* 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

14

H. pylori is the cause of?

Peptic ulcers (or peptic ulcer disease)

15

H. pylori love to produce what?

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

16

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

Spores through fecal contamination or vomit

17

What's the hyper-virulent strain of CDAD?

* BI/NAP1/027
* It produces more toxins A and B, it can hyper sporulate and secrete bi-valent toxins which others don't

18

What do hepatitis B and C have common?

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

19

Is there a vaccine for hepatitis B?

Yes, given at birth

20

How do you get hepatitis B and C?

Hep B: Blood transfusion and sharing needles
Hep C: Bodily fluids (sexually)

21

Noro Virus

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

22

Ascariasis

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

23

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

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

24

Dental carries are also known as?

Cavities (caries) and plaque

25

Dysentery

Diarrhea accompanied by blood and mucus

26

Types of Periodontal Disease

Gingivitis and periodontitis

27

What toxin does EHEC produce?

Shiga toxin, causes watery diarrhea

28

Dysentery

Diarrhea accompanied by blood and mucus

29

Types of Periodontal Disease

Gingivitis and periodontitis

30

What toxin does EHEC produce?

Shiga toxin, causes watery diarrhea

31

Cause of dental caries?

Lactobacillus and strep mutans

32

Process of Dental Caries

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

33

Salmonellosis can induce ________ if in the bloodstream.

Septic shock

34

Where can you get Salmonellosis from?

Egg, diary, reptiles (turtles)