Exam 23: Microbial Diseases of the Digestive System

A man reports to his doctor that he is tired all the time and his urine has become darker in color. He has not experienced fever or vomiting recently. The physician notes that his eyes are yellowish and his abdomen is swollen and tender. The man has a history of kidney transplant. The man may be infected with

The accumulation of plaque can lead to the development of (abscesses/caries/ulcers) in the mouth.

A diarrhea called "rice-water" stools is diagnostic of (campylobacteriosis/cholera/shigellosis/typhoid).

All regions of the digestive system have extensive microbiota.

Which of the following is a notable symptom of giardiasis?

Chronic infection with ________ may progress to hepatic cancer.

Dysentery is a severe type of gastroenteritis in which stools contain mucus and blood.

Helicobacter pylori colonizes the (mouth/liver/stomach/intestine) and can cause severe inflammation and tissue erosion.

A young woman being treated for serious burns develops severe diarrhea accompanied by intense abdominal pain. She passes several watery, foul-smelling, bloody stools a day. A colonoscopy reveals patches of yellowish lesions in the large intestine. The probable causative agent is

The portion of the gastrointestinal tract indicated by the arrow is the (ascending/descending/sigmoid/transverse) colon.

The bacterium ________ adheres to and grows on teeth, contributing to dental plaque formation.

Which of the following produce the type III secretion system virulence factor?

The form of infection with Entamoeba histolytica that is frequently asymptomatic is known as (extraintestinal/dysentery/luminal) amebiasis.

Staphylococcus aureus produces (endotoxin/enterotoxin/toxin B) to cause intoxication.

Which of the following conditions usually results in severe acute liver damage?

Salmonella is part of the normal microbiota of virtually all vertebrates except humans.

The virulence factor of Vibrio cholera, which is primarily responsible for the signs and symptoms of cholera, is

Intermediate hosts become infested with tapeworms through ingestion of

Care in the handling and disposal of diapers in day care centers may prevent the spread of which of the following?

The primary treatment for viral gastroenteritis is