Question 1

What is a cause of lactose intolerance?

Accepted Answer

A)   Deficiency of lactose
B)   Deficiency of lactase
C)   A lack of milk in the diet
D)   A lack of a vitamin in the diet
E)   An increase in dairy consumptionF) D) and E)
G) C) and D) B

Question 2

Microorganisms promote the development of dental caries (cavities)  by metabolizing carbohydrates and releasing by-products that are __________.

Accepted Answer

A)   alkaline
B)   acidic
C)   toxic
D)   electrolytes
E)   monosaccharidesF) B) and D)
G) C) and E) B

Question 3

Cholecystokinin, a hormone released from intestinal mucosa by the presence of fats, stimulates the gallbladder to contract and release bile into the duodenum.

Accepted Answer

A) True 
 B)False

Question 4

Gallstones are usually composed of __________.

Accepted Answer

A)   calcium salts
B)   uric acid
C)   cholesterol
D)   bile pigments
E)   electrolytesF) A) and B)
G) C) and E)

Question 5

The greater omentum is composed of a portion of the __________ membrane.

Accepted Answer

A)   peritoneal
B)   pericardial
C)   pleural
D)   hiatal
E)   cutaneousF) None of the above
G) D) and E)

Question 6

Severe liver damage would mainly affect digestion of what nutrient?

Accepted Answer

A)   Carbohydrates
B)   Lipids
C)   Proteins
D)   Nucleic acids
E)   VitaminsF) A) and E)
G) None of the above

Question 7

What is the main part of the stomach called?

Accepted Answer

A)   Fundus
B)   Pylorus
C)   Cardia
D)   Body
E)   Gastric regionF) A) and B)
G) D) and E)

Question 8

What is the function of the hormone secretin?

Accepted Answer

A)   Converts trypsinogen into trypsin
B)   Activates chymotrypsin
C)   Stimulates the release of pancreatic juice high in bicarbonate ions
D)   Inhibits the action of pancreatic lipase
E)   Stimulates salivationF) B) and C)
G) A) and B)

Question 9

The __________ is the layer of the alimentary-canal wall that absorbs nutrients.

Accepted Answer

A)   serosa
B)   submucosa
C)   mucosa
D)   muscular layerE) C) and D)
F) B) and C)

Question 10

Vitamin E, a fat-soluble vitamin, is destroyed by cooking.

Accepted Answer

A) True 
 B)False

Question 11

Acute pancreatitis is often caused by the conversion of __________.

Accepted Answer

A)   trypsin to trypsinogen
B)   trypsinogen to trypsin
C)   pepsin to pepsinogen
D)   pepsinogen to pepsin
E)   proinsulin to insulinF) B) and C)
G) A) and E)

Question 12

Jaundice, which is characterized by a yellowish tinge to the tissues, is due to an increased blood concentration of __________.

Accepted Answer

A)   cholesterol
B)   bile pigments
C)   carotene
D)   hemoglobin A
E)   glucoseF) A) and B)
G) D) and E)

Question 13

Intrinsic factor is necessary for the normal absorption of vitamin __________ from the small intestine.

Accepted Answer

The answer of Intrinsic factor is necessary for the normal...

Question 14

The cecum is located at the inferior end of the descending colon.

Accepted Answer

A) True 
 B)False

Question 15

If you take a piece of white bread and chew it slowly for a long period of time, the flavor will become very sweet. This is due to the starch molecules in the bread being digested into smaller sugars that trigger a sweet sensation. Which substance is responsible for this breakdown?

Accepted Answer

A)   Salivary amylase
B)   Pepsin
C)   Bicarbonate ion
D)   MucusE) A) and D)
F) B) and C)

Question 16

The entire alimentary canal runs between what two structures?

Accepted Answer

A)   The mouth and the large intestine
B)   The stomach and the small intestine
C)   The liver and the gallbladder
D)   The mouth and the anus
E)   The anus and the pharynxF) B) and D)
G) D) and E)

Question 17

What happens during the defecation reflex?

Accepted Answer

A)   The diaphragm lowers.
B)   The glottis opens.
C)   Abdominal-wall muscles relax.
D)   Internal abdominal pressure decreases.
E)   Peristaltic waves decrease.F) C) and D)
G) B) and D)

Question 18

Food passing from the stomach through the small intestine first passes into the duodenum, then the jejunum, and lastly, the ileum.

Accepted Answer

A) True 
 B)False  True

Question 19

A genetic mutation prevents the parietal cells of the gastric glands from secreting their typical products. What effect would this have on digestion within the stomach?

Accepted Answer

A)   The stomach would not produce a protective mucus coating and would digest itself.
B)   Somatostatin would be secreted, so all digestion would be halted.
C)   Pepsinogen would not be secreted, so protein digestion would not occur within the stomach.
D)   Hydrochloric acid would not be produced, so pepsinogen would not be activated to form pepsin.E) C) and D)
F) B) and C)

Question 20

The __________ canal includes the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anal canal.

Accepted Answer

The answer of The __________ canal includes the mouth, pharynx,...

Exam 15: Digestion and Nutrition

What is a cause of lactose intolerance?

Correct AnswerverifiedB

Microorganisms promote the development of dental caries (cavities) by metabolizing carbohydrates and releasing by-products that are __________.

Correct AnswerverifiedB

Cholecystokinin, a hormone released from intestinal mucosa by the presence of fats, stimulates the gallbladder to contract and release bile into the duodenum.

Correct AnswerverifiedShow Answer

Gallstones are usually composed of __________.

Correct AnswerverifiedShow Answer

The greater omentum is composed of a portion of the __________ membrane.

Correct AnswerverifiedShow Answer

Severe liver damage would mainly affect digestion of what nutrient?

Correct AnswerverifiedShow Answer

What is the main part of the stomach called?

Correct AnswerverifiedShow Answer

What is the function of the hormone secretin?

Correct AnswerverifiedShow Answer

The __________ is the layer of the alimentary-canal wall that absorbs nutrients.

Correct AnswerverifiedShow Answer

Vitamin E, a fat-soluble vitamin, is destroyed by cooking.

Correct AnswerverifiedShow Answer

Acute pancreatitis is often caused by the conversion of __________.

Correct AnswerverifiedShow Answer

Jaundice, which is characterized by a yellowish tinge to the tissues, is due to an increased blood concentration of __________.

Correct AnswerverifiedShow Answer

Intrinsic factor is necessary for the normal absorption of vitamin __________ from the small intestine.

Correct AnswerverifiedShow Answer

The cecum is located at the inferior end of the descending colon.

Correct AnswerverifiedShow Answer

If you take a piece of white bread and chew it slowly for a long period of time, the flavor will become very sweet. This is due to the starch molecules in the bread being digested into smaller sugars that trigger a sweet sensation. Which substance is responsible for this breakdown?

Correct AnswerverifiedShow Answer

The entire alimentary canal runs between what two structures?

Correct AnswerverifiedShow Answer

What happens during the defecation reflex?

Correct AnswerverifiedShow Answer

Food passing from the stomach through the small intestine first passes into the duodenum, then the jejunum, and lastly, the ileum.

Correct AnswerverifiedTrue

A genetic mutation prevents the parietal cells of the gastric glands from secreting their typical products. What effect would this have on digestion within the stomach?

Correct AnswerverifiedShow Answer

The __________ canal includes the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anal canal.

Correct AnswerverifiedShow Answer

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B

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True

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