Question 1

The vagus nerve

Accepted Answer

A) innervates only the upper GI tract. 
B) is sympathetic. 
C) secretes norepinephrine as its neurotransmitter. 
D) speeds up gut motility and secretion. 
A) innervates only the upper GI tract. 
B) is sympathetic. 
C) secretes norepinephrine as its neurotransmitter. 
D) speeds up gut motility and secretion.

Question 2

The primary function of which organ is to deliver chyme to the duodenum at the proper rate?

Accepted Answer

A) Esophagus 
B) Colon 
C) Liver 
D) Stomach 
A) Esophagus 
B) Colon 
C) Liver 
D) Stomach

Question 3

What is the sphincter that allows food to enter the stomach from the esophagus?

Accepted Answer

A) Sphincter of Oddi 
B) Pyloric sphincter 
C) Lower esophageal sphincter 
D) Oral sphincter 
A) Sphincter of Oddi 
B) Pyloric sphincter 
C) Lower esophageal sphincter 
D) Oral sphincter

Question 4

The duodenum

Accepted Answer

A) receives partially digested food from the jejunum. 
B) pumps food through the sphincter of Oddi into the ampulla of Vater. 
C) is the site where most digestion and absorption occur. 
D) forms both the hepatic and splenic flexures. 
A) receives partially digested food from the jejunum. 
B) pumps food through the sphincter of Oddi into the ampulla of Vater. 
C) is the site where most digestion and absorption occur. 
D) forms both the hepatic and splenic flexures.

Question 5

The hepatic flexure,splenic flexure,cecum,and colon are all

Accepted Answer

A) parts of the biliary tree. 
B) proximal to the LES. 
C) parts of the large intestine. 
D) parts of the hepatic portal system. 
A) parts of the biliary tree. 
B) proximal to the LES. 
C) parts of the large intestine. 
D) parts of the hepatic portal system.

Question 6

Which enzyme is found in saliva?

Accepted Answer

A) Bile 
B) Trypsin 
C) Ptyalin 
D) Lipase 
A) Bile 
B) Trypsin 
C) Ptyalin 
D) Lipase

Question 7

Which of the following is a hormone?

Accepted Answer

A) HCl 
B) Cholecystokinin 
C) Trypsin 
D) Lipase 
A) HCl 
B) Cholecystokinin 
C) Trypsin 
D) Lipase

Question 8

A drug that blocks vagal activity

Accepted Answer

A) slows GI motility and reduces GI secretions. 
B) increases the secretion of bile. 
C) speeds up peristalsis. 
D) causes diarrhea. 
A) slows GI motility and reduces GI secretions. 
B) increases the secretion of bile. 
C) speeds up peristalsis. 
D) causes diarrhea.

Question 9

Deglutition refers to

Accepted Answer

A) chewing. 
B) peristalsis. 
C) swallowing. 
D) burping. 
A) chewing. 
B) peristalsis. 
C) swallowing. 
D) burping.

Question 10

Which of the following words is most related to the microvilli?

Accepted Answer

A) Peristalsis 
B) Digestion 
C) Emulsification 
D) Absorption 
A) Peristalsis 
B) Digestion 
C) Emulsification 
D) Absorption

Question 11

The cecum,colon,and rectum are parts of which structure?

Accepted Answer

A) Hepatic portal system 
B) Small intestine 
C) Large intestine 
D) Biliary tree 
A) Hepatic portal system 
B) Small intestine 
C) Large intestine 
D) Biliary tree

Question 12

Which of the following is not true of CCK (cholecystokinin)?

Accepted Answer

A) Stimulates the gallbladder to secrete bile 
B) Secreted by the walls of the duodenum in response to the presence of fat 
C) Classified as a hormone 
D) Classified as a lipase 
A) Stimulates the gallbladder to secrete bile 
B) Secreted by the walls of the duodenum in response to the presence of fat 
C) Classified as a hormone 
D) Classified as a lipase

Question 13

Trypsin

Accepted Answer

A) is secreted by the liver. 
B) is lipolytic. 
C) is an emulsifying agent. 
D) produces small peptides and amino acids as digestive end-products. 
A) is secreted by the liver. 
B) is lipolytic. 
C) is an emulsifying agent. 
D) produces small peptides and amino acids as digestive end-products.

Question 14

Sucrase,maltase,and lactase are

Accepted Answer

A) secreted by the pancreas. 
B) gastric enzymes. 
C) disaccharidases. 
D) emulsifying agents. 
A) secreted by the pancreas. 
B) gastric enzymes. 
C) disaccharidases. 
D) emulsifying agents.

Question 15

The gastric parietal cells

Accepted Answer

A) maintain the gastric pH in the alkaline range. 
B) secrete acid and all emulsifying agents. 
C) secrete HCl and intrinsic factor. 
D) secrete HCl and vitamin B₁₂. 
A) maintain the gastric pH in the alkaline range. 
B) secrete acid and all emulsifying agents. 
C) secrete HCl and intrinsic factor. 
D) secrete HCl and vitamin B₁₂.

Question 16

The sphincter of Oddi,ampulla of Vater,and cystic duct

Accepted Answer

A) drain into the portal vein. 
B) are biliary structures. 
C) carry pancreatic enzymes to the duodenum. 
D) connect the pylorus to the duodenum. 
A) drain into the portal vein. 
B) are biliary structures. 
C) carry pancreatic enzymes to the duodenum. 
D) connect the pylorus to the duodenum.

Question 17

Which of the following is not a function of the liver?

Accepted Answer

A) Makes blood-clotting factors such as prothrombin 
B) Synthesizes bile 
C) Secretes cholecystokinin and secretin 
D) Stores fat-soluble vitamins 
A) Makes blood-clotting factors such as prothrombin 
B) Synthesizes bile 
C) Secretes cholecystokinin and secretin 
D) Stores fat-soluble vitamins

Question 18

The portal vein carries blood that is rich in digestive end-products to which organ?

Accepted Answer

A) Liver 
B) Pancreas 
C) Duodenum 
D) Pylorus 
A) Liver 
B) Pancreas 
C) Duodenum 
D) Pylorus

Question 19

Which organ secretes the most potent of the digestive enzymes?

Accepted Answer

A) Liver 
B) Pancreas 
C) Duodenum 
D) Spleen 
A) Liver 
B) Pancreas 
C) Duodenum 
D) Spleen

Question 20

What is the chief organ of drug detoxification?

Accepted Answer

A) Pancreas 
B) Cecum 
C) Liver 
D) Stomach 
A) Pancreas 
B) Cecum 
C) Liver 
D) Stomach

Exam 23: Digestive System

The vagus nerve

The primary function of which organ is to deliver chyme to the duodenum at the proper rate?

What is the sphincter that allows food to enter the stomach from the esophagus?

The duodenum

The hepatic flexure,splenic flexure,cecum,and colon are all

Which enzyme is found in saliva?

Which of the following is a hormone?

A drug that blocks vagal activity

Deglutition refers to

Which of the following words is most related to the microvilli?

The cecum,colon,and rectum are parts of which structure?

Which of the following is not true of CCK (cholecystokinin)?

Trypsin

Sucrase,maltase,and lactase are

The gastric parietal cells

The sphincter of Oddi,ampulla of Vater,and cystic duct

Which of the following is not a function of the liver?

The portal vein carries blood that is rich in digestive end-products to which organ?

Which organ secretes the most potent of the digestive enzymes?

What is the chief organ of drug detoxification?

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Anatomy of the Heart

Function of the Heart

Anatomy of the Blood Vessels and Special Circulations

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Urinary System

Water, Electrolyte, and Acidbase Balance

Reproductive Systems

Human Development and Heredity

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