Question 1

The ________ is the part of the digestive tract that has the most lymph nodules and bacteria.

Accepted Answer

A) duodenum 
B) jejunum 
C) ileum 
D) colon 
A) duodenum 
B) jejunum 
C) ileum 
D) colon

Question 2

The enterogastric reflex begins in the stomach and ends in the small intestine.

Accepted Answer

A) True 
 B)False

Question 3

The digestive system

Accepted Answer

A) ingests food, propels food, mechanically and chemically breaks down food, absorbs nutrients, and defecates the remainder. 
B) mechanically and chemically assembles food from absorbed nutrients. 
C) sends cellular debris to lysosomes. 
D) absorbs nutrients in the mouth, pharynx, esophagus and stomach, and releases nutrients in the intestines. 
A) ingests food, propels food, mechanically and chemically breaks down food, absorbs nutrients, and defecates the remainder. 
B) mechanically and chemically assembles food from absorbed nutrients. 
C) sends cellular debris to lysosomes. 
D) absorbs nutrients in the mouth, pharynx, esophagus and stomach, and releases nutrients in the intestines.

Question 4

The pyloric sphincter serves as a valve that controls the movement of food between the esophagus and stomach.

Accepted Answer

A) True 
 B)False

Question 5

________ ions help to regulate the pH of saliva.

Accepted Answer

The answer of ________ ions help to regulate the pH...

Question 6

Which is not an involuntary part of the swallowing reflex?

Accepted Answer

A) Muscles pull the pharynx upward toward the food. 
B) The epiglottis closes off the top of the trachea. 
C) The tongue presses against the uvula and soft palate. 
D) The tongue rolls chewed food into a bolus and pushes it to the oropharynx. 
A) Muscles pull the pharynx upward toward the food. 
B) The epiglottis closes off the top of the trachea. 
C) The tongue presses against the uvula and soft palate. 
D) The tongue rolls chewed food into a bolus and pushes it to the oropharynx.

Question 7

Peristalsis mixes food in small segments of the alimentary canal with digestive enzymes.

Accepted Answer

A) True 
 B)False

Question 8

Most recipients of cholecystectomies have difficulty digesting fatty foods after the procedure. This is due to the lack of emulsification of lipids during the process of digestion, which makes it harder for lipase to access and break down fats. This means that ________ are not being efficiently released into the small intestine during digestion.

Accepted Answer

The answer of Most recipients of cholecystectomies have difficulty digesting...

Question 9

Which is not a factor that may affect the rate of absorption of certain medications with age?

Accepted Answer

A) Slowing of the exit of chyme from the stomach 
B) Slowing peristalsis 
C) Thinning of the stomach lining 
D) Loss of power in mastication 
A) Slowing of the exit of chyme from the stomach 
B) Slowing peristalsis 
C) Thinning of the stomach lining 
D) Loss of power in mastication

Question 10

An extracorporeal liver assist device was surgically implanted into Sam. This device is very similar to

Accepted Answer

A) an artificial heart. 
B) artificial skin. 
C) kidney dialysis. 
D) a blood transfusion. 
A) an artificial heart. 
B) artificial skin. 
C) kidney dialysis. 
D) a blood transfusion.

Question 11

The movement of chyme through the small intestine is increased by parasympathetic impulses and is inhibited by sympathetic impulses.

Accepted Answer

A) True 
 B)False

Question 12

The functions of saliva include

Accepted Answer

A) moistening, binding and building up food particles; beginning chemical digestion of carbohydrates; and cleansing the esophagus. 
B) moistening, binding and dissolving food particles; beginning chemical digestion of proteins; and cleansing the esophagus. 
C) moistening, binding and building up food particles; beginning mechanical digestion of fats; and cleansing the teeth and mouth. 
D) moistening, binding and dissolving food particles; beginning chemical digestion of carbohydrates; and cleansing the teeth and mouth. 
A) moistening, binding and building up food particles; beginning chemical digestion of carbohydrates; and cleansing the esophagus. 
B) moistening, binding and dissolving food particles; beginning chemical digestion of proteins; and cleansing the esophagus. 
C) moistening, binding and building up food particles; beginning mechanical digestion of fats; and cleansing the teeth and mouth. 
D) moistening, binding and dissolving food particles; beginning chemical digestion of carbohydrates; and cleansing the teeth and mouth.

Question 13

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. 
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.

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

The hormone secretin

Accepted Answer

A) converts trypsinogen to trypsin. 
B) activates chymotrypsin. 
C) stimulates release of pancreatic juice. 
D) inhibits the action of pancreatic lipase. 
A) converts trypsinogen to trypsin. 
B) activates chymotrypsin. 
C) stimulates release of pancreatic juice. 
D) inhibits the action of pancreatic lipase.

Question 16

The organs of the alimentary canal are innervated by sympathetic as well as by parasympathetic nerve fibers.

Accepted Answer

A) True 
 B)False

Question 17

David has sustained severe damage to his liver in a car accident. Digestion of which nutrient will be most affected?

Accepted Answer

A) Carbohydrates 
B) Lipids 
C) Proteins 
D) Vitamins 
A) Carbohydrates 
B) Lipids 
C) Proteins 
D) Vitamins

Question 18

Large, fixed phagocytes in the lining of the hepatic sinusoids are ________ cells.

Accepted Answer

The answer of Large, fixed phagocytes in the lining of...

Question 19

Loperamide is a medication used to slow and stop diarrhea. It inhibits nervous signalling to the large intestine, relaxing the smooth muscles within the intestinal wall and preventing intestinal contents from moving forward. The large peristaltic waves inhibited by loperamide are________.

Accepted Answer

The answer of Loperamide is a medication used to slow...

Question 20

Chisel-shaped teeth are ________.

Accepted Answer

The answer of Chisel-shaped teeth are ________....

Exam 17: Digestive System

The ________ is the part of the digestive tract that has the most lymph nodules and bacteria.

The enterogastric reflex begins in the stomach and ends in the small intestine.

The digestive system

The pyloric sphincter serves as a valve that controls the movement of food between the esophagus and stomach.

________ ions help to regulate the pH of saliva.

Which is not an involuntary part of the swallowing reflex?

Peristalsis mixes food in small segments of the alimentary canal with digestive enzymes.

Which is not a factor that may affect the rate of absorption of certain medications with age?

An extracorporeal liver assist device was surgically implanted into Sam. This device is very similar to

The movement of chyme through the small intestine is increased by parasympathetic impulses and is inhibited by sympathetic impulses.

The functions of saliva include

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?

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

The hormone secretin

The organs of the alimentary canal are innervated by sympathetic as well as by parasympathetic nerve fibers.

David has sustained severe damage to his liver in a car accident. Digestion of which nutrient will be most affected?

Large, fixed phagocytes in the lining of the hepatic sinusoids are ________ cells.

Loperamide is a medication used to slow and stop diarrhea. It inhibits nervous signalling to the large intestine, relaxing the smooth muscles within the intestinal wall and preventing intestinal contents from moving forward. The large peristaltic waves inhibited by loperamide are________.

Chisel-shaped teeth are ________.

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Joints of the Skeletal System

Muscular System

Nervous System I: Basic Structure and Function

Nervous System II: Divisions of the Nervous System

Nervous System III: Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Nutrition and Metabolism

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Pregnancy, Growth, and Development

Genetics and Genomics

Filters