Question 1

Ducts from the pancreas enter the

Accepted Answer

A) stomach. 
B) colon. 
C) duodenum. 
D) jejunum. 
E) ileum. 
A) stomach. 
B) colon. 
C) duodenum. 
D) jejunum. 
E) ileum. C

Question 2

Which of the following factors does NOT stimulate the stomach to pass on its contents to the small intestine?

Accepted Answer

A) stress 
B) stimulation of mechanoreceptors in the stomach wall following a large meal 
C) reduced fat or acid content of chyme in the duodenum 
D) elation and relaxation 
E) all of these 
A) stress 
B) stimulation of mechanoreceptors in the stomach wall following a large meal 
C) reduced fat or acid content of chyme in the duodenum 
D) elation and relaxation 
E) all of these A

Question 3

Which of the following is NOT a hormone?

Accepted Answer

A) gastrin 
B) secretin 
C) mucin 
D) cholecystokinin 
E) leptin 
A) gastrin 
B) secretin 
C) mucin 
D) cholecystokinin 
E) leptin C

Question 4

The digestion of __________ begins in the mouth.

Accepted Answer

A) carbohydrates 
B) proteins 
C) lipids 
D) nucleic acids 
E) none of these 
A) carbohydrates 
B) proteins 
C) lipids 
D) nucleic acids 
E) none of these

Question 5

Well-fed individuals who remain hungry are likely producing excessive amounts of

Accepted Answer

A) leptin. 
B) ghrelin. 
C) gastric juice. 
D) pancreatic hormones. 
E) cholecystokinin. 
A) leptin. 
B) ghrelin. 
C) gastric juice. 
D) pancreatic hormones. 
E) cholecystokinin.

Question 6

Chewing

Accepted Answer

A) breaks food down into smaller pieces. 
B) physically and mechanically breaks up the food. 
C) increases the surface area of food exposed to digestive enzymes. 
D) mixes some enzymes with the food. 
E) does all of these. 
A) breaks food down into smaller pieces. 
B) physically and mechanically breaks up the food. 
C) increases the surface area of food exposed to digestive enzymes. 
D) mixes some enzymes with the food. 
E) does all of these.

Question 7

Grinding of food is a function of the

Accepted Answer

A) incisors. 
B) canines. 
C) premolars. 
D) molars. 
E) molars and premolars 
A) incisors. 
B) canines. 
C) premolars. 
D) molars. 
E) molars and premolars

Question 8

Which of the following possess an incomplete digestive system?

Accepted Answer

A) annelids 
B) flatworms 
C) mollusks 
D) arthropods 
E) echinoderms 
A) annelids 
B) flatworms 
C) mollusks 
D) arthropods 
E) echinoderms

Question 9

Use the above figure to answer questions 
  
-The pre-digestive organ listed above "C" is called the

Accepted Answer

A) mouth. 
B) crop. 
C) gizzard. 
D) secreting portion of stomach. 
E) cloaca. 
A) mouth. 
B) crop. 
C) gizzard. 
D) secreting portion of stomach. 
E) cloaca.

Question 10

Which of the following organs of the human digestive system does NOT produce any secretions associated with digestion?

Accepted Answer

A) stomach 
B) liver 
C) esophagus 
D) pancreas 
E) salivary gland 
A) stomach 
B) liver 
C) esophagus 
D) pancreas 
E) salivary gland

Question 11

Digestion of protein begins in the

Accepted Answer

A) mouth. 
B) esophagus. 
C) stomach. 
D) duodenum. 
E) jejunum. 
A) mouth. 
B) esophagus. 
C) stomach. 
D) duodenum. 
E) jejunum.

Question 12

Which of the following enzymes does NOT digest proteins?

Accepted Answer

A) trypsin 
B) chymotrypsin 
C) aminopeptidase 
D) pepsin 
E) lipase 
A) trypsin 
B) chymotrypsin 
C) aminopeptidase 
D) pepsin 
E) lipase

Question 13

The first part of the small intestine is the

Accepted Answer

A) duodenum. 
B) ileum. 
C) pylorus. 
D) cecum. 
E) jejunum. 
A) duodenum. 
B) ileum. 
C) pylorus. 
D) cecum. 
E) jejunum.

Question 14

Sphincters

Accepted Answer

A) are circular muscles. 
B) prevent backflow. 
C) are smooth muscles. 
D) are found at the entrance and exit of the stomach. 
E) include all of these. 
A) are circular muscles. 
B) prevent backflow. 
C) are smooth muscles. 
D) are found at the entrance and exit of the stomach. 
E) include all of these.

Question 15

Concerning the role of the pancreas in digestion,

Accepted Answer

A) no digestion occurs in the pancreas. 
B) endocrine cells secrete bicarbonate, which helps neutralize highly acidic chyme. 
C) endocrine cells release enzymes that break down carbohydrates, fats, proteins, and nucleic acids in the small intestine. 
D) exocrine tissue produces insulin and glucagon, which help regulate the metabolism of sugar. 
E) all of these are true. 
A) no digestion occurs in the pancreas. 
B) endocrine cells secrete bicarbonate, which helps neutralize highly acidic chyme. 
C) endocrine cells release enzymes that break down carbohydrates, fats, proteins, and nucleic acids in the small intestine. 
D) exocrine tissue produces insulin and glucagon, which help regulate the metabolism of sugar. 
E) all of these are true.

Question 16

Which of the following is NOT a secretion of the stomach?

Accepted Answer

A) pepsinogen 
B) mucus 
C) gastrin 
D) hydrochloric acid 
E) lipase 
A) pepsinogen 
B) mucus 
C) gastrin 
D) hydrochloric acid 
E) lipase

Question 17

Which of the following enzymes digests fats?

Accepted Answer

A) aminopeptidase 
B) disaccharidases 
C) amylase 
D) lipase 
E) trypsin 
A) aminopeptidase 
B) disaccharidases 
C) amylase 
D) lipase 
E) trypsin

Question 18

Which of the following is NOT an accessory organ of the human digestive system?

Accepted Answer

A) salivary gland 
B) esophagus 
C) pancreas 
D) gallbladder 
E) liver 
A) salivary gland 
B) esophagus 
C) pancreas 
D) gallbladder 
E) liver

Question 19

Use the above figure to answer questions 
  
-The teeth designated by the letter "D" in the above figure are called

Accepted Answer

A) canines. 
B) premolars. 
C) incisors. 
D) molars. 
E) none of these. 
A) canines. 
B) premolars. 
C) incisors. 
D) molars. 
E) none of these.

Question 20

High stomach acidity

Accepted Answer

A) creates ideal conditions for carbohydrate digestion. 
B) promotes emulsification of fats. 
C) favors protein digestion. 
D) blocks the release of histamine, thereby favoring production of peptic ulcers. 
E) converts lipases into their active forms. 
A) creates ideal conditions for carbohydrate digestion. 
B) promotes emulsification of fats. 
C) favors protein digestion. 
D) blocks the release of histamine, thereby favoring production of peptic ulcers. 
E) converts lipases into their active forms.

Exam 40: Digestion and Human Nutrition

Ducts from the pancreas enter the

Which of the following factors does NOT stimulate the stomach to pass on its contents to the small intestine?

Which of the following is NOT a hormone?

The digestion of __________ begins in the mouth.

Well-fed individuals who remain hungry are likely producing excessive amounts of

Chewing

Grinding of food is a function of the

Which of the following possess an incomplete digestive system?

Use the above figure to answer questions -The pre-digestive organ listed above "C" is called the

Which of the following organs of the human digestive system does NOT produce any secretions associated with digestion?

Digestion of protein begins in the

Which of the following enzymes does NOT digest proteins?

The first part of the small intestine is the

Sphincters

Concerning the role of the pancreas in digestion,

Which of the following is NOT a secretion of the stomach?

Which of the following enzymes digests fats?

Which of the following is NOT an accessory organ of the human digestive system?

Use the above figure to answer questions -The teeth designated by the letter "D" in the above figure are called

High stomach acidity

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters