Question 1

Which of the following is mismatched?

Accepted Answer

A)  Echinococcus granulosus - most benign of human tapeworm infections
B)  Taenia solium - cysticerosis
C)  trichinellosis - humans eat larva of parasite in undercooked meat
D)  pinworm infestation - humans ingest parasite's eggs
E)  hookworm infestation - heavy infections may cause pica

Question 2

Thorough cooking of food will prevent all of the following EXCEPT

Accepted Answer

A)  trichinellosis.
B)  beef tapeworm.
C)  staphylococcal food poisoning.
D)  salmonellosis.
E)  shigellosis.

Question 3

Acute gastroenteritis that occurs after an incubation period of two to three days,persists for about a week,and commonly affects children is probably caused by

Accepted Answer

A)  Giardia.
B)  rotavirus.
C)  Salmonella.
D)  Staphylococcus aureus.
E)  Trichinella.

Question 4

All of the following infections can result from drinking contaminated water EXCEPT

Accepted Answer

A)  Cyclospora infection.
B)  giardiasis.
C)  trichinellosis.
D)  cholera.
E)  cryptosporidiosis.

Question 5

Approximately 30 percent of the body's immune system is located in the intestinal tract.

Accepted Answer

A) True 
 B)False

Question 6

Poultry products are a likely source of infection by

Accepted Answer

A)  Helicobacter pylori.
B)  Salmonella enterica.
C)  Vibrio cholerae.
D)  Shigella spp.
E)  Clostridium perfringens.

Question 7

Multiple pathovars of E.coli are well characterized.Identify four different pathogenic strains and discuss the mechanism of disease for each.

Accepted Answer

1. Enterotoxigenic E. coli (ETEC): ETEC ...

Question 8

Many bacterial infections of the lower digestive tract are treated with

Accepted Answer

A)  antitoxin.
B)  penicillin.
C)  water and electrolytes.
D)  quinacrine.
E)  thorough cooking.

Question 9

Typhoid fever differs from salmonellosis in that in typhoid fever

Accepted Answer

A)  the microorganisms multiply within macrophages.
B)  the organism is only spread in the feces of humans.
C)  the incubation period is much shorter.
D)  the organism first invades the intestinal mucosa.
E)  infection occurs due to ingestion of endospores.

Question 10

Gums bleeding while brushing one's teeth is most commonly associated with

Accepted Answer

A)  halitosis.
B)  cavities.
C)  gingivitis.
D)  periodontitis.
E)  trench mouth.

Question 11

Which of the following correctly lists the stages of tooth decay?

Accepted Answer

A)  plaque accumulation,destruction of enamel,advancement of decay through enamel,decay in dentin,decay in tooth pulp
B)  decay in dentin,plaque accumulation,destruction of enamel,advancement of decay through enamel,decay in tooth pulp
C)  plaque accumulation,destruction of enamel,decay in tooth pulp,advancement of decay through enamel,decay in dentin
D)  destruction of enamel,advancement of decay through enamel,plaque accumulation,decay in dentin,decay in tooth pulp
E)  destruction of enamel,plaque accumulation,advancement of decay through enamel,decay in dentin,decay in tooth pulp

Question 12

Which one of the following diseases of the gastrointestinal system is transmitted by the respiratory route?

Accepted Answer

A)  staphylococcal enterotoxicosis
B)  mumps
C)  Vibrio gastroenteritis
D)  bacillary dysentery
E)  traveler's diarrhea

Question 13

Discuss why cholera epidemics are often associated with floods.

Accepted Answer

Cholera epidemics are often associated w...

Question 14

Clostridium perfringens typically causes a self-limiting gastroenteritis.

Accepted Answer

A) True 
 B)False

Question 15

Gastroenteritis due to ingestion of food contaminated with Staphylococcus aureus is due to intoxication by enterotoxins.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following organisms is shed in the feces of humans and animals,including beavers,and can contaminate water?

Accepted Answer

A)  Giardia lamblia
B)  Escherichia coli
C)  Taenia spp.
D)  Vibrio parahaemolyticus
E)  Entamoeba histolytica

Question 17

"Rice water stools" are characteristic of

Accepted Answer

A)  salmonellosis.
B)  cholera.
C)  bacillary dysentery.
D)  amebic dysentery.
E)  tapeworm infestation.

Question 18

Which of the following is included in GALT?

Accepted Answer

A)  thymus
B)  Peyer's patches
C)  tonsils
D)  liver
E)  salivary glands

Question 19

An outbreak of viral gastroenteritis occurs in a pediatrics ward.Rotavirus is the most likely causative agent.

Accepted Answer

A) True 
 B)False

Question 20

Which structure or component of the small intestine is important to antimicrobial defense?

Accepted Answer

A)  salivary glands
B)  stomach acid
C)  Paneth cells
D)  gall bladder
E)  crevicular fluid

Exam 25: Microbial Diseases of the Digestive System

All of the following infections can result from drinking contaminated water EXCEPT

Correct AnswerverifiedShow Answer

Which of the following is mismatched?

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Which one of the following diseases of the gastrointestinal system is transmitted by the respiratory route?

Correct AnswerverifiedShow Answer

Approximately 30 percent of the body's immune system is located in the intestinal tract.

Correct AnswerverifiedShow Answer

Which of the following organisms is shed in the feces of humans and animals,including beavers,and can contaminate water?

Correct AnswerverifiedShow Answer

Which of the following is included in GALT?

Correct AnswerverifiedShow Answer

Which structure or component of the small intestine is important to antimicrobial defense?

Correct AnswerverifiedShow Answer

"Rice water stools" are characteristic of

Correct AnswerverifiedShow Answer

Clostridium perfringens typically causes a self-limiting gastroenteritis.

Correct AnswerverifiedShow Answer

Typhoid fever differs from salmonellosis in that in typhoid fever

Correct AnswerverifiedShow Answer

Many bacterial infections of the lower digestive tract are treated with

Correct AnswerverifiedShow Answer

Thorough cooking of food will prevent all of the following EXCEPT

Correct AnswerverifiedShow Answer

Gums bleeding while brushing one's teeth is most commonly associated with

Correct AnswerverifiedShow Answer

Acute gastroenteritis that occurs after an incubation period of two to three days,persists for about a week,and commonly affects children is probably caused by

Correct AnswerverifiedShow Answer

Which of the following correctly lists the stages of tooth decay?

Correct AnswerverifiedShow Answer

An outbreak of viral gastroenteritis occurs in a pediatrics ward.Rotavirus is the most likely causative agent.

Correct AnswerverifiedShow Answer

Discuss why cholera epidemics are often associated with floods.

Correct AnswerAnswered by ExamLex AICholera epidemics are often associated w...View AnswerShow Answer

Poultry products are a likely source of infection by

Correct AnswerverifiedShow Answer

Gastroenteritis due to ingestion of food contaminated with Staphylococcus aureus is due to intoxication by enterotoxins.

Correct AnswerverifiedShow Answer

Multiple pathovars of E.coli are well characterized.Identify four different pathogenic strains and discuss the mechanism of disease for each.

Correct AnswerAnswered by ExamLex AI1. Enterotoxigenic E. coli (ETEC): ETEC ...View AnswerShow Answer

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Cholera epidemics are often associated w...
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Answered by ExamLex AI
1. Enterotoxigenic E. coli (ETEC): ETEC ...
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