Question 1

The myenteric plexus is found in the _____ of the digestive tract wall.

Accepted Answer

A)  mucosa 
B)  serosa 
C)  submucosa 
D)  muscularis 
E)  adventitia 
A)  mucosa 
B)  serosa 
C)  submucosa 
D)  muscularis 
E)  adventitia

Question 2

What is the purpose of segmental contractions of the small intestine?

Accepted Answer

A)  propelling the chyme forward 
B)  mixing of intestinal contents 
C)  moving intestinal contents into the colon 
D)  stretching the intestinal wall 
A)  propelling the chyme forward 
B)  mixing of intestinal contents 
C)  moving intestinal contents into the colon 
D)  stretching the intestinal wall

Question 3

Segmental contractions are mixing contractions that occur predominantly in the _________________.

Accepted Answer

A)  oral cavity 
B)  large intestine 
C)  esophagus 
D)  stomach 
E)  small intestine 
A)  oral cavity 
B)  large intestine 
C)  esophagus 
D)  stomach 
E)  small intestine

Question 4

Match the secretion with the correct cell type.
-gastrin

Accepted Answer

A) endocrine cells 
B) hepatocyte 
C) parietal cells 
D) acinar cells 
E) goblet cells 
A) endocrine cells 
B) hepatocyte 
C) parietal cells 
D) acinar cells 
E) goblet cells

Question 5

Which of the following represents a mismatch in stomach wall structure?

Accepted Answer

A)  muscularis - two layers; both circular 
B)  rugae - folds of mucosa and submucosa 
C)  mucosa - gastric glands 
D)  gastric pits - open onto surface of stomach mucosa 
E)  lining - simple columnar epithelium 
A)  muscularis - two layers; both circular 
B)  rugae - folds of mucosa and submucosa 
C)  mucosa - gastric glands 
D)  gastric pits - open onto surface of stomach mucosa 
E)  lining - simple columnar epithelium

Question 6

Gastritis, peptic ulcers and gastric cancer can all be caused by

Accepted Answer

A)  Helicobacter pylori, a bacterium. 
B)  increased secretion of gastric bicarbonate. 
C)  pH of the stomach contents continuously greater than 4. 
D)  increased mucus production by the neck cells. 
E)  None of these choices is correct. 
A)  Helicobacter pylori, a bacterium. 
B)  increased secretion of gastric bicarbonate. 
C)  pH of the stomach contents continuously greater than 4. 
D)  increased mucus production by the neck cells. 
E)  None of these choices is correct.

Question 7

Match the process or term with the best description.
-mastication

Accepted Answer

A) swallowing 
B) chewing 
C) ball of food 
D) semifluid material 
E) phagocytosis 
A) swallowing 
B) chewing 
C) ball of food 
D) semifluid material 
E) phagocytosis

Question 8

Secretions that are added as food moves through the GI tract assist in

Accepted Answer

A)  liquefying and digesting the food. 
B)  vitamin A and D production and storage. 
C)  distribution of nutrients throughout the body. 
D)  insulin production. 
E)  bile production. 
A)  liquefying and digesting the food. 
B)  vitamin A and D production and storage. 
C)  distribution of nutrients throughout the body. 
D)  insulin production. 
E)  bile production.

Question 9

The villi, microvilli and plicae circularis function to

Accepted Answer

A)  liberate hormones. 
B)  promote peristalsis. 
C)  produce bile. 
D)  increase surface area for absorption. 
E)  stimulate chemical digestion. 
A)  liberate hormones. 
B)  promote peristalsis. 
C)  produce bile. 
D)  increase surface area for absorption. 
E)  stimulate chemical digestion.

Question 10

Which of the following would inhibit normal movements of the tongue?

Accepted Answer

A)  swollen lips 
B)  lingual frenulum extending to tip of tongue 
C)  decrease in number of taste buds 
D)  loss of all teeth 
E)  swollen tonsils 
A)  swollen lips 
B)  lingual frenulum extending to tip of tongue 
C)  decrease in number of taste buds 
D)  loss of all teeth 
E)  swollen tonsils

Question 11

Which of the following will stimulate intestinal motility?

Accepted Answer

A)  distension of the intestinal wall 
B)  low pH 
C)  presence of amino acids 
D)  All of the choices will stimulate intestinal motility 
A)  distension of the intestinal wall 
B)  low pH 
C)  presence of amino acids 
D)  All of the choices will stimulate intestinal motility

Question 12

Why does the superior part of the esophagus contain skeletal muscle instead of smooth muscle?

Accepted Answer

A)  The first phase of swallowing is under involuntary control. 
B)  The second phase of swallowing is under voluntary control. 
C)  The first phase of swallowing is under voluntary control. 
D)  The second phase of swallowing is under involuntary control. 
A)  The first phase of swallowing is under involuntary control. 
B)  The second phase of swallowing is under voluntary control. 
C)  The first phase of swallowing is under voluntary control. 
D)  The second phase of swallowing is under involuntary control.

Question 13

Match the organ with the function.
-duodenum

Accepted Answer

A) produces bile 
B) stores and concentrates bile 
C) primary site of chemical digestion 
D) produces intrinsic factor 
E) bacterial decomposition 
A) produces bile 
B) stores and concentrates bile 
C) primary site of chemical digestion 
D) produces intrinsic factor 
E) bacterial decomposition

Question 14

Match the enzyme with the products of its digestive activity.
-lactase

Accepted Answer

A) glucose and galactose 
B) amino acids 
C) fatty acids and glycerol 
D) maltose and isomaltose 
E) polysaccharides and disaccharides 
A) glucose and galactose 
B) amino acids 
C) fatty acids and glycerol 
D) maltose and isomaltose 
E) polysaccharides and disaccharides

Question 15

Salivary gland secretion is primarily controlled by the

Accepted Answer

A)  facial and glossopharyngeal nerves. 
B)  vagus nerve. 
C)  taste centers of the medulla. 
D)  intercostal nerves. 
E)  trigeminal nerve. 
A)  facial and glossopharyngeal nerves. 
B)  vagus nerve. 
C)  taste centers of the medulla. 
D)  intercostal nerves. 
E)  trigeminal nerve.

Question 16

Match the process or term with the best description.
-chyme

Accepted Answer

A) swallowing 
B) chewing 
C) ball of food 
D) semifluid material 
E) phagocytosis 
A) swallowing 
B) chewing 
C) ball of food 
D) semifluid material 
E) phagocytosis

Question 17

Match the enzyme or hormone with the organ that produces it.
-carboxypeptidase

Accepted Answer

A) salivary glands 
B) stomach 
C) liver 
D) small intestine 
E) pancreas 
A) salivary glands 
B) stomach 
C) liver 
D) small intestine 
E) pancreas

Question 18

What portion of the small intestine is most distal from the pylorus of the stomach?

Accepted Answer

A)  jejunum 
B)  duodenum 
C)  ileum 
D)  common bile duct 
E)  hepatopancreatic ampulla 
A)  jejunum 
B)  duodenum 
C)  ileum 
D)  common bile duct 
E)  hepatopancreatic ampulla

Question 19

Which of the following is NOT a function of the small intestine?

Accepted Answer

A)  mastication of food 
B)  absorption of nutrients 
C)  complete digestion of food 
D)  mixing by segmental contractions 
A)  mastication of food 
B)  absorption of nutrients 
C)  complete digestion of food 
D)  mixing by segmental contractions

Question 20

All of the following are basic functions of the digestive system, except ___________.

Accepted Answer

A)  ingestion 
B)  mastication 
C)  digestion 
D)  absorption 
E)  circulation 
A)  ingestion 
B)  mastication 
C)  digestion 
D)  absorption 
E)  circulation

Exam 24: Digestive System

The myenteric plexus is found in the _____ of the digestive tract wall.

What is the purpose of segmental contractions of the small intestine?

Segmental contractions are mixing contractions that occur predominantly in the _________________.

Match the secretion with the correct cell type. -gastrin

Which of the following represents a mismatch in stomach wall structure?

Gastritis, peptic ulcers and gastric cancer can all be caused by

Match the process or term with the best description. -mastication

Secretions that are added as food moves through the GI tract assist in

The villi, microvilli and plicae circularis function to

Which of the following would inhibit normal movements of the tongue?

Which of the following will stimulate intestinal motility?

Why does the superior part of the esophagus contain skeletal muscle instead of smooth muscle?

Match the organ with the function. -duodenum

Match the enzyme with the products of its digestive activity. -lactase

Salivary gland secretion is primarily controlled by the

Match the process or term with the best description. -chyme

Match the enzyme or hormone with the organ that produces it. -carboxypeptidase

What portion of the small intestine is most distal from the pylorus of the stomach?

Which of the following is NOT a function of the small intestine?

All of the following are basic functions of the digestive system, except ___________.

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolyte, and Acid-Based Balance

Reproductive System

Development, Growth, Aging, and Genetics

Filters