Question 1

The purpose of peristalsis is to:
a.  break apart chunks of food and mix it in digestive juices. 
 b. propel food forward along the GI tract. 
 c. absorb food. 
d.  enable swallowing.

Accepted Answer

b. propel food forward along the GI tract.

Question 2

The hormone that inhibits gastric muscle, slowing passage of food into the duodenum, is called:
 a. gastric inhibitory peptide. 
  b.enterogastrone. 
c.  chyme. 
d.  cholecystokinin.

Accepted Answer

a. gastric inhibitory peptide.

Question 3

The hormone that stimulates the gallbladder to release bile is:
 a. enterogastrone. 
b.  insulin. 
 c. gastrin. 
 d. cholecystokinin.

Accepted Answer

d  cholecystokinin.

Question 4

The hormone thought to be a messenger causing release of digestive enzymes from the intestinal mucosa is:
 a.vasoactive intestinal peptide. 
 b. enterogastrone. 
c.  secretin. 
d.  cholecystokinin-pancreozymin

Accepted Answer

a.vasoactive intestinal peptide.

Question 5

Which of the following is not one of the openings that must be blocked when food moves from the pharynx into the esophagus?
 a. Oropharynx 
 b. Nasopharynx 
 c. Larynx 
d.  Mouth

Accepted Answer

a.   Oropharynx

Question 6

Which of the processes of mechanical digestion involves the esophagus?
 a. Deglutition 
b.  Peristalsis 
c.  Churning 
d.  Both A and B

Accepted Answer

d. both A and B

Question 7

Which of the following is not true of enzymes?
a.  They accelerate chemical reactions. 
b.  They change chemically and are in the end products of the reaction. 
c.  They are vital to chemical reactions. 
d.  Many contain vitamins in their structur

Accepted Answer

b.They change chemically and are in the end products of the reaction.

Question 8

The process of swallowing is known as:
a.  mastication. 
b.  deglutition. 
c.  peristalsis. 
 d. segmentation.

Accepted Answer

b.deglutition.

Question 9

Which blood vessel carries absorbed food from the GI tract to the liver?
a.  Hepatic artery 
b.  Hepatic vein 
 c. Portal vein 
d.  Renal artery

Accepted Answer

c. Portal vein

Question 10

The process of fat emulsification consists of:
 a. chemically breaking down fat molecules. 
b.  the secretion of digestive juices for fat digestion. 
c.  absorption of fats. 
d.  breaking fats into small droplets.

Accepted Answer

d.  breaking fats into small droplets

Question 11

The substances absorbed into the lymph capillaries are:
 a. glycerol and fatty acids. 
 b. glucose and glycerol. 
 c. amino acids and fatty acids. 
 d. glucose and amino acids.

Accepted Answer

a.glycerol and fatty acids.

Question 12

Bicarbonates are useful in the GI tract to:
a.  neutralize hydrochloric acid. 
 b. break down fats. 
c.  activate secretin. 
 d. activate pepsin.

Accepted Answer

a. neutralize hydrochloric acid.

Question 13

Hydrolysis refers to:
a.  breaking down a molecule of water to hydrogen and oxygen gas. 
 b. using water to split larger compounds into smaller ones. 
c.  using water to build larger compounds from smaller ones. 
 d. none of the above.

Accepted Answer

b.using water to split larger compounds into smaller ones.

Question 14

The sodium cotransport or coupled transport acts to transport sodium ions and glucose molecules _____ the GI lumen.
 a. passively out of 
 b. passively into 
c.  actively out of 
d.  actively into

Accepted Answer

a.  passively out of

Question 15

When classified according to the kind of chemical reactions catalyzed, digestive enzymes are referred to as _____ enzymes.
 a. oxidation-reduction 
b.  hydrolyzing 
 c. phosphorylating 
d.  hydrase

Accepted Answer

b.hydrolyzing

Question 16

The final product of carbohydrate digestion is a:
  a.disaccharide. 
  b.monosaccharide. 
c.  polysaccharide. 
 d. fatty acid.

Accepted Answer

b.monosaccharide.

Question 17

Which of the following is a disaccharide?
a.  Glucose 
 b. Starch 
c.  Sucrose 
 d. Glycogen

Accepted Answer

c.Sucrose

Question 18

The major site for the absorption of the end products of digestion is the:
  a.stomach. 
 b. small intestine. 
  c.cecum. 
 d. large intestine.

Accepted Answer

b.small intestine.

Question 19

An end product of fat digestion is:
 a. glycerol. 
b.  glucose. 
c.  glycogen. 
d.  galactose.

Accepted Answer

a.  glycerol.

Question 20

The enzyme pepsin begins the digestion of:
a.  carbohydrates. 
 b. protein. 
c.  fat. 
 d. nucleic acids.

Accepted Answer

b.  protein.

Question 21

Polysaccharides are hydrolyzed into disaccharides by enzymes known as:
a.  lipase. 
 b. proteases. 
c.  maltase. 
d.  amylase.

Accepted Answer

d. amylase.

Question 22

The hormone that stimulates the release of bicarbonate substance from the pancreas is:
 a. enterogastrone. 
 b. secretin. 
 c. gastrin. 
d.  cholecystokinin-pancreozymin.

Accepted Answer

b. secretin.

Question 23

Which phase(s) of gastric secretion is(are) stimulated by the sight, taste, and smell of food?
 a. Intestinal phase 
 b. Cephalic phase 
c.  Gastric phase 
d.  All of the above

Accepted Answer

b.Cephalic phase

Question 24

Glucose moves from the GI tract into the circulatory system by the process of:
 a. diffusion. 
 b. cotransport. 
 c. facilitated diffusion. 
 d. filtration.

Accepted Answer

b.cotransport.

Question 25

The enterogastric reflex causes:
a.  secretion of digestive enzymes in the small intestine. 
  b.secretion of digestive enzymes in the stomach. 
c.  inhibition of gastric peristalsis. 
d.  acceleration of gastric peristalsis.

Accepted Answer

c.inhibition of gastric peristalsis.

Question 26

Rotavirus can cause what life-threatening condition in infants?
a.  Constipation 
b.  Diarrhea 
 c. Cholera 
 d. Pyloric stenosis

Accepted Answer

b.Diarrhea

Question 27

Which step of deglutition is under voluntary control?
 a. Oral stage 
b.  Pharyngeal stage 
c.  Esophageal stage 
d.  Gastric phase

Accepted Answer

a.Oral stage

Question 28

Cellulose is a residue of digestion that comes from:
a.  carbohydrates. 
 b. meat proteins. 
 c. undigested fats. 
d.  undigested connective tissue.

Accepted Answer

a. carbohydrates.

Question 29

Which of these is not an example of mechanical digestion?
 a. Moistening the food 
 b. Changing food from large to small particles 
c.  Propelling food through the digestive tract 
d.  All of the above are examples of mechanical digestion.

Accepted Answer

a.Moistening the food

Question 30

The intestinal hormone cholecystokinin:
a.  causes the pancreas to increase exocrine secretions high in enzyme content. 
b.  opposes the influence of gastrin on gastric parietal cells. 
c.  stimulates the contraction of the gallbladder. 
d.  does all

Accepted Answer

d. does all of the above.

k allen

week 13

Question	Answer
The purpose of peristalsis is to: a. break apart chunks of food and mix it in digestive juices. b. propel food forward along the GI tract. c. absorb food. d. enable swallowing.	b. propel food forward along the GI tract.
The hormone that inhibits gastric muscle, slowing passage of food into the duodenum, is called: a. gastric inhibitory peptide. b.enterogastrone. c. chyme. d. cholecystokinin.	a. gastric inhibitory peptide.
The hormone that stimulates the gallbladder to release bile is: a. enterogastrone. b. insulin. c. gastrin. d. cholecystokinin.	d cholecystokinin.
The hormone thought to be a messenger causing release of digestive enzymes from the intestinal mucosa is: a.vasoactive intestinal peptide. b. enterogastrone. c. secretin. d. cholecystokinin-pancreozymin	a.vasoactive intestinal peptide.
Which of the following is not one of the openings that must be blocked when food moves from the pharynx into the esophagus? a. Oropharynx b. Nasopharynx c. Larynx d. Mouth	a. Oropharynx
Which of the processes of mechanical digestion involves the esophagus? a. Deglutition b. Peristalsis c. Churning d. Both A and B	d. both A and B
Which of the following is not true of enzymes? a. They accelerate chemical reactions. b. They change chemically and are in the end products of the reaction. c. They are vital to chemical reactions. d. Many contain vitamins in their structur	b.They change chemically and are in the end products of the reaction.
The process of swallowing is known as: a. mastication. b. deglutition. c. peristalsis. d. segmentation.	b.deglutition.
Which blood vessel carries absorbed food from the GI tract to the liver? a. Hepatic artery b. Hepatic vein c. Portal vein d. Renal artery	c. Portal vein
The process of fat emulsification consists of: a. chemically breaking down fat molecules. b. the secretion of digestive juices for fat digestion. c. absorption of fats. d. breaking fats into small droplets.	d. breaking fats into small droplets
The substances absorbed into the lymph capillaries are: a. glycerol and fatty acids. b. glucose and glycerol. c. amino acids and fatty acids. d. glucose and amino acids.	a.glycerol and fatty acids.
Bicarbonates are useful in the GI tract to: a. neutralize hydrochloric acid. b. break down fats. c. activate secretin. d. activate pepsin.	a. neutralize hydrochloric acid.
Hydrolysis refers to: a. breaking down a molecule of water to hydrogen and oxygen gas. b. using water to split larger compounds into smaller ones. c. using water to build larger compounds from smaller ones. d. none of the above.	b.using water to split larger compounds into smaller ones.
The sodium cotransport or coupled transport acts to transport sodium ions and glucose molecules _____ the GI lumen. a. passively out of b. passively into c. actively out of d. actively into	a. passively out of
When classified according to the kind of chemical reactions catalyzed, digestive enzymes are referred to as _____ enzymes. a. oxidation-reduction b. hydrolyzing c. phosphorylating d. hydrase	b.hydrolyzing
The final product of carbohydrate digestion is a: a.disaccharide. b.monosaccharide. c. polysaccharide. d. fatty acid.	b.monosaccharide.
Which of the following is a disaccharide? a. Glucose b. Starch c. Sucrose d. Glycogen	c.Sucrose
The major site for the absorption of the end products of digestion is the: a.stomach. b. small intestine. c.cecum. d. large intestine.	b.small intestine.
An end product of fat digestion is: a. glycerol. b. glucose. c. glycogen. d. galactose.	a. glycerol.
The enzyme pepsin begins the digestion of: a. carbohydrates. b. protein. c. fat. d. nucleic acids.	b. protein.
Polysaccharides are hydrolyzed into disaccharides by enzymes known as: a. lipase. b. proteases. c. maltase. d. amylase.	d. amylase.
The hormone that stimulates the release of bicarbonate substance from the pancreas is: a. enterogastrone. b. secretin. c. gastrin. d. cholecystokinin-pancreozymin.	b. secretin.
Which phase(s) of gastric secretion is(are) stimulated by the sight, taste, and smell of food? a. Intestinal phase b. Cephalic phase c. Gastric phase d. All of the above	b.Cephalic phase
Glucose moves from the GI tract into the circulatory system by the process of: a. diffusion. b. cotransport. c. facilitated diffusion. d. filtration.	b.cotransport.
The enterogastric reflex causes: a. secretion of digestive enzymes in the small intestine. b.secretion of digestive enzymes in the stomach. c. inhibition of gastric peristalsis. d. acceleration of gastric peristalsis.	c.inhibition of gastric peristalsis.
Rotavirus can cause what life-threatening condition in infants? a. Constipation b. Diarrhea c. Cholera d. Pyloric stenosis	b.Diarrhea
Which step of deglutition is under voluntary control? a. Oral stage b. Pharyngeal stage c. Esophageal stage d. Gastric phase	a.Oral stage
Cellulose is a residue of digestion that comes from: a. carbohydrates. b. meat proteins. c. undigested fats. d. undigested connective tissue.	a. carbohydrates.
Which of these is not an example of mechanical digestion? a. Moistening the food b. Changing food from large to small particles c. Propelling food through the digestive tract d. All of the above are examples of mechanical digestion.	a.Moistening the food
The intestinal hormone cholecystokinin: a. causes the pancreas to increase exocrine secretions high in enzyme content. b. opposes the influence of gastrin on gastric parietal cells. c. stimulates the contraction of the gallbladder. d. does all	d. does all of the above.

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