Chapter 22: Infections of the Digestive System
MULTIPLE CHOICE
1. Which part of the human digestive tract cannot be colonized by microorganisms?
a. mouth
b. All parts of the digestive tract can be colonized.
c. liver
d. small intestine
ANS: B DIF: Moderate REF: 22.1
OBJ: 22.1a List the structural components of the digestive system and describe the relationship
between them. MSC: Understanding
2. When does breakdown of food begin?
a. in the esophagus
b. when saliva is secreted by the salivary glands
c. in the gastric acids of the stomach
d. in the large intestine
ANS: B DIF: Moderate REF: 22.1
OBJ: 22.1b Name the functions of different structures of the digestive system.
MSC: Understanding
3. What is the job of the esophagus?
a. to propel food toward the stomach
b. to separate the contents of the abdominal cavity from the chest
c. to digest food
d. to break down toxins
ANS: A DIF: Easy REF: 22.1
OBJ: 22.1b Name the functions of different structures of the digestive system.
MSC: Remembering
4. What is chyme?
a. the wavelike motion of intestinal muscles
b. semisolid waste
c. food broken down by muscle contraction and gastric juices
d. the interior stomach lining
ANS: C DIF: Easy REF: 22.1
OBJ: 22.1b Name the functions of different structures of the digestive system.
MSC: Understanding
5. Many enteric pathogens are transmitted through
a. sexual contact. c. airborne transmission.
b. the parenteral route. d. expulsion of feces.
ANS: D DIF: Easy REF: 22.1
OBJ: 22.1b Name the functions of different structures of the digestive system.
, MSC: Remembering
6. During digestion, bicarbonate is secreted by ________ cells.
a. parietal c. mucus neck
b. chief d. M
ANS: C DIF: Moderate REF: 22.1
OBJ: 22.1c Explain the roles of specialized cells of the intestinal tract (chief cells, M cells, parietal
cells, and mucous neck cells). MSC: Understanding
7. Which of the following is NOT a natural defense of the oral cavity?
a. acidic conditions c. IgA
b. lysozyme d. digestive mucus
ANS: A DIF: Moderate REF: 22.2
OBJ: 22.2a List microbes comprising normal microbiota of the oral cavity.
MSC: Understanding
8. What is the purpose of drinking fluoride-treated water?
a. hardens tooth enamel c. fights plaque
b. softens tooth enamel d. kills organisms that cause cavities
ANS: A DIF: Easy REF: 22.2
OBJ: 22.2b Analyze how biofilms contribute to infections of the oral cavity.
MSC: Remembering
9. Which is NOT a common cause of periodontal disease?
a. Aggregatibacter c. Bacteroides
b. Porphyromonas d. Lactobacillus
ANS: D DIF: Moderate REF: 22.2
OBJ: 22.2c Compare the signs and symptoms of common infections of the oral cavity.
MSC: Understanding
10. Individuals with ________ find eating and swallowing to be painful.
a. gingivitis c. dental caries
b. trench mouth d. plaque
ANS: B DIF: Easy REF: 22.2
OBJ: 22.2c Compare the signs and symptoms of common infections of the oral cavity.
MSC: Understanding
11. What is shown in this figure?
MULTIPLE CHOICE
1. Which part of the human digestive tract cannot be colonized by microorganisms?
a. mouth
b. All parts of the digestive tract can be colonized.
c. liver
d. small intestine
ANS: B DIF: Moderate REF: 22.1
OBJ: 22.1a List the structural components of the digestive system and describe the relationship
between them. MSC: Understanding
2. When does breakdown of food begin?
a. in the esophagus
b. when saliva is secreted by the salivary glands
c. in the gastric acids of the stomach
d. in the large intestine
ANS: B DIF: Moderate REF: 22.1
OBJ: 22.1b Name the functions of different structures of the digestive system.
MSC: Understanding
3. What is the job of the esophagus?
a. to propel food toward the stomach
b. to separate the contents of the abdominal cavity from the chest
c. to digest food
d. to break down toxins
ANS: A DIF: Easy REF: 22.1
OBJ: 22.1b Name the functions of different structures of the digestive system.
MSC: Remembering
4. What is chyme?
a. the wavelike motion of intestinal muscles
b. semisolid waste
c. food broken down by muscle contraction and gastric juices
d. the interior stomach lining
ANS: C DIF: Easy REF: 22.1
OBJ: 22.1b Name the functions of different structures of the digestive system.
MSC: Understanding
5. Many enteric pathogens are transmitted through
a. sexual contact. c. airborne transmission.
b. the parenteral route. d. expulsion of feces.
ANS: D DIF: Easy REF: 22.1
OBJ: 22.1b Name the functions of different structures of the digestive system.
, MSC: Remembering
6. During digestion, bicarbonate is secreted by ________ cells.
a. parietal c. mucus neck
b. chief d. M
ANS: C DIF: Moderate REF: 22.1
OBJ: 22.1c Explain the roles of specialized cells of the intestinal tract (chief cells, M cells, parietal
cells, and mucous neck cells). MSC: Understanding
7. Which of the following is NOT a natural defense of the oral cavity?
a. acidic conditions c. IgA
b. lysozyme d. digestive mucus
ANS: A DIF: Moderate REF: 22.2
OBJ: 22.2a List microbes comprising normal microbiota of the oral cavity.
MSC: Understanding
8. What is the purpose of drinking fluoride-treated water?
a. hardens tooth enamel c. fights plaque
b. softens tooth enamel d. kills organisms that cause cavities
ANS: A DIF: Easy REF: 22.2
OBJ: 22.2b Analyze how biofilms contribute to infections of the oral cavity.
MSC: Remembering
9. Which is NOT a common cause of periodontal disease?
a. Aggregatibacter c. Bacteroides
b. Porphyromonas d. Lactobacillus
ANS: D DIF: Moderate REF: 22.2
OBJ: 22.2c Compare the signs and symptoms of common infections of the oral cavity.
MSC: Understanding
10. Individuals with ________ find eating and swallowing to be painful.
a. gingivitis c. dental caries
b. trench mouth d. plaque
ANS: B DIF: Easy REF: 22.2
OBJ: 22.2c Compare the signs and symptoms of common infections of the oral cavity.
MSC: Understanding
11. What is shown in this figure?
