Question 1

The most important function of the villi of the small intestine is to

Accepted Answer

A)  increase the secretion of enzymes for digestion. 
B)  increase the surface area for absorption of nutrients. 
C)  excrete waste into the intestines. 
D)  secrete hormones in response to nutrients in the gut. 
A)  increase the secretion of enzymes for digestion. 
B)  increase the surface area for absorption of nutrients. 
C)  excrete waste into the intestines. 
D)  secrete hormones in response to nutrients in the gut. B

Question 2

If peristalsis were to reverse direction,the result would be

Accepted Answer

A)  vomiting. 
B)  diarrhea. 
C)  constipation. 
D)  intestinal failure. 
A)  vomiting. 
B)  diarrhea. 
C)  constipation. 
D)  intestinal failure. A

Question 3

Release of digestive secretions into the small intestine is caused by _____ that are released when _____.

Accepted Answer

A)  enzymes;food enters the stomach 
B)  enzymes;food enters the small intestine 
C)  hormones;food enters the stomach 
D)  hormones;enters the small intestine 
A)  enzymes;food enters the stomach 
B)  enzymes;food enters the small intestine 
C)  hormones;food enters the stomach 
D)  hormones;enters the small intestine D

Question 4

If the small intestine did not release secretin,the result would be that

Accepted Answer

A)  the stomach would not release gastric juices to moisten and begin digestion of swallowed food. 
B)  the gallbladder would not release bile to help the process of fat breakdown. 
C)  peristalsis would slow down,and food would move very slowly through the intestines. 
D)  the chyme entering the small intestine would be too acidic for digestive enzymes to work. 
A)  the stomach would not release gastric juices to moisten and begin digestion of swallowed food. 
B)  the gallbladder would not release bile to help the process of fat breakdown. 
C)  peristalsis would slow down,and food would move very slowly through the intestines. 
D)  the chyme entering the small intestine would be too acidic for digestive enzymes to work.

Question 5

A person who complains of problems with gas,bloating,and diarrhea if he or she eats breakfast cereal with milk,but not if he or she eats pancakes or waffles,may have

Accepted Answer

A)  milk allergy. 
B)  gluten intolerance. 
C)  irritable bowel syndrome. 
D)  lactose intolerance. 
A)  milk allergy. 
B)  gluten intolerance. 
C)  irritable bowel syndrome. 
D)  lactose intolerance.

Question 6

The body process over which people have most conscious control is

Accepted Answer

A)  ingestion. 
B)  digestion. 
C)  metabolism. 
D)  excretion. 
A)  ingestion. 
B)  digestion. 
C)  metabolism. 
D)  excretion.

Question 7

Most mechanical breakdown of food occurs in the

Accepted Answer

A)  large intestine. 
B)  liver and pancreas. 
C)  mouth and stomach. 
D)  esophagus and mouth. 
A)  large intestine. 
B)  liver and pancreas. 
C)  mouth and stomach. 
D)  esophagus and mouth.

Question 8

The part of the digestive system that is easiest to live without is the

Accepted Answer

A)  taste buds. 
B)  gallbladder. 
C)  large intestine. 
D)  appendix. 
A)  taste buds. 
B)  gallbladder. 
C)  large intestine. 
D)  appendix.

Question 9

If the speed of peristalsis were to increase,the result would be

Accepted Answer

A)  heartburn. 
B)  vomiting. 
C)  diarrhea. 
D)  constipation. 
A)  heartburn. 
B)  vomiting. 
C)  diarrhea. 
D)  constipation.

Question 10

What is the main difference between passive diffusion and active transport?

Accepted Answer

A)  In active transport,the villi membrane surrounds the substance. 
B)  Active transport requires energy;passive diffusion does not. 
C)  Passive diffusion is involuntary;active transport is voluntary. 
D)  Active transport requires enzymes;passive diffusion does not. 
A)  In active transport,the villi membrane surrounds the substance. 
B)  Active transport requires energy;passive diffusion does not. 
C)  Passive diffusion is involuntary;active transport is voluntary. 
D)  Active transport requires enzymes;passive diffusion does not.

Question 11

A busy and stressed person who eats very few fruits and vegetables and does not take time to exercise is likely to experience

Accepted Answer

A)  vomiting. 
B)  diarrhea. 
C)  constipation. 
D)  lactose intolerance. 
A)  vomiting. 
B)  diarrhea. 
C)  constipation. 
D)  lactose intolerance.

Question 12

If the large intestine did not carry out its main function,feces would be

Accepted Answer

A)  alkaline. 
B)  acidic. 
C)  liquid. 
D)  very dry. 
A)  alkaline. 
B)  acidic. 
C)  liquid. 
D)  very dry.

Question 13

Peristalsis is necessary to make it possible for people to _____ food.

Accepted Answer

A)  chew 
B)  digest 
C)  swallow 
D)  smell and taste 
A)  chew 
B)  digest 
C)  swallow 
D)  smell and taste

Question 14

Dehydration may occur after

Accepted Answer

A)  vomiting and diarrhea. 
B)  constipation and heartburn. 
C)  esophagitis and anemia. 
D)  gastroesophageal reflux and hiatal hernia. 
A)  vomiting and diarrhea. 
B)  constipation and heartburn. 
C)  esophagitis and anemia. 
D)  gastroesophageal reflux and hiatal hernia.

Question 15

Chemicals that act as messengers are called

Accepted Answer

A)  proteins. 
B)  hormones. 
C)  enzymes. 
D)  nerve impulses. 
A)  proteins. 
B)  hormones. 
C)  enzymes. 
D)  nerve impulses.

Question 16

The adjectives mechanical and chemical describe two

Accepted Answer

A)  actions needed to cook food. 
B)  ways to move substances in the body. 
C)  types of action that result in digestion. 
D)  ways in which molecules are transported into and out of cells. 
A)  actions needed to cook food. 
B)  ways to move substances in the body. 
C)  types of action that result in digestion. 
D)  ways in which molecules are transported into and out of cells.

Question 17

An example of catabolism is the

Accepted Answer

A)  building of new muscle tissue during growth. 
B)  breakdown of glucose to provide energy. 
C)  synthesis of protein from amino acids. 
D)  use of enzymes to digest protein and release amino acids. 
A)  building of new muscle tissue during growth. 
B)  breakdown of glucose to provide energy. 
C)  synthesis of protein from amino acids. 
D)  use of enzymes to digest protein and release amino acids.

Question 18

People tend to feel full for longer after eating a high-fat meal rather than a low-fat meal because

Accepted Answer

A)  ingestion of fat causes release of hormones that signal a feeling of fullness to the brain. 
B)  food stays in the stomach for longer to allow emulsification by bile and digestion by gastric enzymes. 
C)  fat in the duodenum causes release of gastric inhibitory polypeptide,which decreases peristalsis of the stomach. 
D)  metabolism of the products of fat metabolism by the liver takes longer than metabolism of other nutrients. 
A)  ingestion of fat causes release of hormones that signal a feeling of fullness to the brain. 
B)  food stays in the stomach for longer to allow emulsification by bile and digestion by gastric enzymes. 
C)  fat in the duodenum causes release of gastric inhibitory polypeptide,which decreases peristalsis of the stomach. 
D)  metabolism of the products of fat metabolism by the liver takes longer than metabolism of other nutrients.

Question 19

The best description of an enzyme is a(n)

Accepted Answer

A)  chemical messenger. 
B)  acid and alkali buffer. 
C)  emulsifier. 
D)  organic catalyst. 
A)  chemical messenger. 
B)  acid and alkali buffer. 
C)  emulsifier. 
D)  organic catalyst.

Question 20

The most important functions of the small intestine are

Accepted Answer

A)  digestion and denaturation. 
B)  segmentation and excretion. 
C)  digestion and absorption. 
D)  peristalsis and mechanical digestion. 
A)  digestion and denaturation. 
B)  segmentation and excretion. 
C)  digestion and absorption. 
D)  peristalsis and mechanical digestion.

The most important function of the villi of the small intestine is to

If peristalsis were to reverse direction,the result would be

Release of digestive secretions into the small intestine is caused by _ that are released when _.

If the small intestine did not release secretin,the result would be that

A person who complains of problems with gas,bloating,and diarrhea if he or she eats breakfast cereal with milk,but not if he or she eats pancakes or waffles,may have

The body process over which people have most conscious control is

Most mechanical breakdown of food occurs in the

The part of the digestive system that is easiest to live without is the

If the speed of peristalsis were to increase,the result would be

What is the main difference between passive diffusion and active transport?

A busy and stressed person who eats very few fruits and vegetables and does not take time to exercise is likely to experience

If the large intestine did not carry out its main function,feces would be

Peristalsis is necessary to make it possible for people to _____ food.

Dehydration may occur after

Chemicals that act as messengers are called

The adjectives mechanical and chemical describe two

An example of catabolism is the

People tend to feel full for longer after eating a high-fat meal rather than a low-fat meal because

The best description of an enzyme is a(n)

The most important functions of the small intestine are

Wellness Nutrition

Personal and Community Nutrition

Carbohydrates

Fats

Protein

Vitamins

Water and Minerals

Energy, Weight, and Fitness

Nutrition Across The Life Span

Nutrition Assessment and Patient Care

Food-Related Issues

Nutrition for Disorders of the Gastrointestinal Tract

Nutrition for Disorders of the Liver, Gallbladder, and Pancreas

Nutrition for Diabetes Mellitus

Nutrition in Metabolic Stress: Burns, Trauma and Surgery

Nutrition for Cardiopulmonary Diseases

Nutrition for Diseases of the Kidneys

Nutrition for Neuro Psychiatric Disorders

Nutrition in Cancer and HIV/AIDS

Filters

Exam 3: Digestion,Absorption,and Metabolism

The most important function of the villi of the small intestine is to

If peristalsis were to reverse direction,the result would be

Release of digestive secretions into the small intestine is caused by _____ that are released when _____.

If the small intestine did not release secretin,the result would be that

A person who complains of problems with gas,bloating,and diarrhea if he or she eats breakfast cereal with milk,but not if he or she eats pancakes or waffles,may have

The body process over which people have most conscious control is

Most mechanical breakdown of food occurs in the

The part of the digestive system that is easiest to live without is the

If the speed of peristalsis were to increase,the result would be

What is the main difference between passive diffusion and active transport?

A busy and stressed person who eats very few fruits and vegetables and does not take time to exercise is likely to experience

If the large intestine did not carry out its main function,feces would be

Peristalsis is necessary to make it possible for people to _____ food.

Dehydration may occur after

Chemicals that act as messengers are called

The adjectives mechanical and chemical describe two

An example of catabolism is the

People tend to feel full for longer after eating a high-fat meal rather than a low-fat meal because

The best description of an enzyme is a(n)

The most important functions of the small intestine are

Wellness Nutrition

Personal and Community Nutrition

Carbohydrates

Fats

Protein

Vitamins

Water and Minerals

Energy, Weight, and Fitness

Nutrition Across The Life Span

Nutrition Assessment and Patient Care

Food-Related Issues

Nutrition for Disorders of the Gastrointestinal Tract

Nutrition for Disorders of the Liver, Gallbladder, and Pancreas

Nutrition for Diabetes Mellitus

Nutrition in Metabolic Stress: Burns, Trauma and Surgery

Nutrition for Cardiopulmonary Diseases

Nutrition for Diseases of the Kidneys

Nutrition for Neuro Psychiatric Disorders

Nutrition in Cancer and HIV/AIDS

Filters

Release of digestive secretions into the small intestine is caused by _ that are released when _.