Question 1

Contraction of the ________ alters the shape of the intestinal lumen and moves epithelial pleats and folds.

Accepted Answer

A) mucosa 
B) submucosa 
C) submucosal plexus 
D) muscularis mucosa 
E) adventitia 
A) mucosa 
B) submucosa 
C) submucosal plexus 
D) muscularis mucosa 
E) adventitia

Question 2

The gastroileal reflex

Accepted Answer

A) empties the duodenum. 
B) promotes gastric secretion. 
C) decreases peristaltic activity. 
D) moves some chyme to the colon. 
E) is relayed through the CNS. 
A) empties the duodenum. 
B) promotes gastric secretion. 
C) decreases peristaltic activity. 
D) moves some chyme to the colon. 
E) is relayed through the CNS.

Question 3

Which of the following is a function of the tongue?

Accepted Answer

A) manipulation to assist with chewing 
B) mechanical processing 
C) sensory analysis 
D) secretion of mucins 
E) All of the answers are correct. 
A) manipulation to assist with chewing 
B) mechanical processing 
C) sensory analysis 
D) secretion of mucins 
E) All of the answers are correct.

Question 4

The saclike structure that joins the ileum at the ileocecal valve is the

Accepted Answer

A) appendix. 
B) sigmoid colon. 
C) rectum. 
D) haustra. 
E) cecum. 
A) appendix. 
B) sigmoid colon. 
C) rectum. 
D) haustra. 
E) cecum.

Question 5

Enterogastric reflexes

Accepted Answer

A) inhibit gastric motility. 
B) inhibit gastric secretion. 
C) are triggered by chyme entering the duodenum. 
D) involve the enteric nervous system. 
E) All of the answers are correct. 
A) inhibit gastric motility. 
B) inhibit gastric secretion. 
C) are triggered by chyme entering the duodenum. 
D) involve the enteric nervous system. 
E) All of the answers are correct.

Question 6

At the hepatic flexure,the colon becomes the

Accepted Answer

A) ascending colon. 
B) transverse colon. 
C) descending colon. 
D) sigmoid colon. 
E) rectum. 
A) ascending colon. 
B) transverse colon. 
C) descending colon. 
D) sigmoid colon. 
E) rectum.

Question 7

Figure 24-2 The Wall of the Small Intestine
Use Figure 24-2 to answer the following question:
-Which structure controls the contraction of the muscularis externa?

Accepted Answer

A) 2 
B) 8 
C) 9 
D) 10 
E) 11 
A) 2 
B) 8 
C) 9 
D) 10 
E) 11

Question 8

A proenzyme secreted by the pancreas is

Accepted Answer

A) trypsinogen. 
B) amylase. 
C) carboxypeptidase. 
D) lipase. 
E) All of the answers are correct. 
A) trypsinogen. 
B) amylase. 
C) carboxypeptidase. 
D) lipase. 
E) All of the answers are correct.

Question 9

In the center of a liver lobule there is a

Accepted Answer

A) hepatic duct. 
B) portal area. 
C) sinusoid. 
D) central vein. 
E) portal vein. 
A) hepatic duct. 
B) portal area. 
C) sinusoid. 
D) central vein. 
E) portal vein.

Question 10

The exocrine portion of the pancreas is composed of

Accepted Answer

A) islets of Langerhans. 
B) pancreatic crypts. 
C) pancreatic acini. 
D) pancreatic lobules. 
E) triads. 
A) islets of Langerhans. 
B) pancreatic crypts. 
C) pancreatic acini. 
D) pancreatic lobules. 
E) triads.

Question 11

Match the gastric phase on the left (1-3)with the correct description on the right (4-6): 1. intestinal phase 4. prepares stomach for arrival of food
2) gastric phase 5. stomach empties and decreases secretions
3) cephalic phase 6. stomach secretes juice and mixes food into chyme

Accepted Answer

A) 1 and 4, 2 and 5, 3 and 6 
B) 1 and 6, 2 and 4, 3 and 5 
C) 1 and 5, 2 and 4, 3 and 6 
D) 1 and 6, 2 and 5, 3 and 4 
E) 1 and 5, 2 and 6, 3 and 4 
A) 1 and 4, 2 and 5, 3 and 6 
B) 1 and 6, 2 and 4, 3 and 5 
C) 1 and 5, 2 and 4, 3 and 6 
D) 1 and 6, 2 and 5, 3 and 4 
E) 1 and 5, 2 and 6, 3 and 4

Question 12

The ridge of oral mucosa that surrounds the base of a tooth is the

Accepted Answer

A) vestibule. 
B) gingiva. 
C) alveolus. 
D) uvula. 
E) faux. 
A) vestibule. 
B) gingiva. 
C) alveolus. 
D) uvula. 
E) faux.

Question 13

Which of the following is not a function of the digestive system?

Accepted Answer

A) mechanical processing 
B) absorption 
C) compaction 
D) ingestion 
E) filtration 
A) mechanical processing 
B) absorption 
C) compaction 
D) ingestion 
E) filtration

Question 14

The enzyme amylase digests

Accepted Answer

A) peptides. 
B) polysaccharides. 
C) disaccharides. 
D) triglycerides. 
E) nucleotides. 
A) peptides. 
B) polysaccharides. 
C) disaccharides. 
D) triglycerides. 
E) nucleotides.

Question 15

Which of these enhance the absorptive effectiveness of the small intestine?

Accepted Answer

A) the plicae circulares 
B) the villi 
C) the microvilli 
D) intestinal movements 
E) All of the answers are correct. 
A) the plicae circulares 
B) the villi 
C) the microvilli 
D) intestinal movements 
E) All of the answers are correct.

Question 16

Parietal cells secrete

Accepted Answer

A) pepsinogen. 
B) gastrin. 
C) mucus. 
D) hydrochloric acid. 
E) enteropeptidase. 
A) pepsinogen. 
B) gastrin. 
C) mucus. 
D) hydrochloric acid. 
E) enteropeptidase.

Question 17

The prominent ridges in the lining of the empty stomach are called

Accepted Answer

A) cardia. 
B) papillae. 
C) rugae. 
D) plicae. 
E) villi. 
A) cardia. 
B) papillae. 
C) rugae. 
D) plicae. 
E) villi.

Question 18

Which of these descriptions best matches the term gastrin?

Accepted Answer

A) where pancreatic juice and bile enter duodenum 
B) carries absorbed sugars and amino acids 
C) stimulates pancreas to secrete bicarbonate-rich fluid 
D) causes gallbladder to contract 
E) stimulates gastric secretion 
A) where pancreatic juice and bile enter duodenum 
B) carries absorbed sugars and amino acids 
C) stimulates pancreas to secrete bicarbonate-rich fluid 
D) causes gallbladder to contract 
E) stimulates gastric secretion

Question 19

The enzyme pepsin digests

Accepted Answer

A) carbohydrates. 
B) proteins. 
C) lipids. 
D) nucleic acids. 
E) vitamins. 
A) carbohydrates. 
B) proteins. 
C) lipids. 
D) nucleic acids. 
E) vitamins.

Question 20

Which of these descriptions best matches the term duodenal ampulla?

Accepted Answer

A) where pancreatic juice and bile enter duodenum 
B) carries absorbed sugars and amino acids 
C) stimulates pancreas to secrete bicarbonate-rich fluid 
D) causes gallbladder to contract 
E) stimulates gastric secretion 
A) where pancreatic juice and bile enter duodenum 
B) carries absorbed sugars and amino acids 
C) stimulates pancreas to secrete bicarbonate-rich fluid 
D) causes gallbladder to contract 
E) stimulates gastric secretion

Exam 24: The Digestive System

Contraction of the ________ alters the shape of the intestinal lumen and moves epithelial pleats and folds.

The gastroileal reflex

Which of the following is a function of the tongue?

The saclike structure that joins the ileum at the ileocecal valve is the

Enterogastric reflexes

At the hepatic flexure,the colon becomes the

Figure 24-2 The Wall of the Small Intestine Use Figure 24-2 to answer the following question: -Which structure controls the contraction of the muscularis externa?

A proenzyme secreted by the pancreas is

In the center of a liver lobule there is a

The exocrine portion of the pancreas is composed of

Match the gastric phase on the left (1-3)with the correct description on the right (4-6): 1. intestinal phase 4. prepares stomach for arrival of food 2) gastric phase 5. stomach empties and decreases secretions 3) cephalic phase 6. stomach secretes juice and mixes food into chyme

The ridge of oral mucosa that surrounds the base of a tooth is the

Which of the following is not a function of the digestive system?

The enzyme amylase digests

Which of these enhance the absorptive effectiveness of the small intestine?

Parietal cells secrete

The prominent ridges in the lining of the empty stomach are called

Which of these descriptions best matches the term gastrin?

The enzyme pepsin digests

Which of these descriptions best matches the term duodenal ampulla?

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Articulations

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Neural Integration I: Sensory Pathways and the Somatic Nervous System

Neural Integration Ii: the Autonomic Nervous System and

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

Filters