Question 1

Feces consist of ________.

Accepted Answer

A)  water 
B)  undigestible food 
C)  bacteria 
D)  sloughed-off epithelial cells 
E)  All of the answers are correct 
A)  water 
B)  undigestible food 
C)  bacteria 
D)  sloughed-off epithelial cells 
E)  All of the answers are correct

Question 2

Which of the following statements applies to the ileocecal sphincter?

Accepted Answer

A)  Cecal distention enhances relaxation of this sphincter. 
B)  Closure of this sphincter inhibits absorption in the small intestine. 
C)  Peristaltic contractions reaching this sphincter cause it to relax. 
D)  This sphincter is usually relaxed. 
E)  This sphincter stays contracted. 
A)  Cecal distention enhances relaxation of this sphincter. 
B)  Closure of this sphincter inhibits absorption in the small intestine. 
C)  Peristaltic contractions reaching this sphincter cause it to relax. 
D)  This sphincter is usually relaxed. 
E)  This sphincter stays contracted.

Question 3

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 are correct. 
A)  Distension of the intestinal wall 
B)  Low pH 
C)  Presence of amino acids 
D)  All of the choices are correct.

Question 4

Mastication

Accepted Answer

A)  increases the surface area of food particles. 
B)  decreases the efficiency of digestion. 
C)  occurs in both the mouth and stomach. 
D)  is never under voluntary control. 
E)  decreases the surface area of food particles. 
A)  increases the surface area of food particles. 
B)  decreases the efficiency of digestion. 
C)  occurs in both the mouth and stomach. 
D)  is never under voluntary control. 
E)  decreases the surface area of food particles.

Question 5

What is the function of enteric sensory neurons?

Accepted Answer

A)  Detect changes in chemical composition of digestive tract contents 
B)  Stimulate or inhibit smooth muscle contraction in the digestive tract 
C)  Stimulate or inhibit glandular secretion in the digestive tract 
D)  Detect stretch of the digestive tract wall 
E)  Both "Detect changes in chemical composition of digestive tract contents" and "Detect stretch of the digestive tract wall" are correct. 
A)  Detect changes in chemical composition of digestive tract contents 
B)  Stimulate or inhibit smooth muscle contraction in the digestive tract 
C)  Stimulate or inhibit glandular secretion in the digestive tract 
D)  Detect stretch of the digestive tract wall 
E)  Both "Detect changes in chemical composition of digestive tract contents" and "Detect stretch of the digestive tract wall" are correct.

Question 6

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 7

Use the key to choose the best answer.
-(1) Amount of bicarbonate in the aqueous component of pancreatic juice
(2) Amount of bicarbonate in the enzymatic portion of pancreatic juice

Accepted Answer

A) First item is greater than the second item. 
B) First item is less than the second item. 
C) First item is equal or nearly equal to the second item. 
A) First item is greater than the second item. 
B) First item is less than the second item. 
C) First item is equal or nearly equal to the second item.

Question 8

Which of the following lipoproteins contains the highest percentage of cholesterol?

Accepted Answer

A)  LDL 
B)  HDL 
C)  VLDL 
D)  Chylomicron 
E)  CDL 
A)  LDL 
B)  HDL 
C)  VLDL 
D)  Chylomicron 
E)  CDL

Question 9

What connects the gallbladder to the common bile duct?

Accepted Answer

A)  Hepatic duct 
B)  Gallbladder duct 
C)  Cystic duct 
D)  Portal duct 
A)  Hepatic duct 
B)  Gallbladder duct 
C)  Cystic duct 
D)  Portal duct

Question 10

The enteric plexus

Accepted Answer

A)  is found in the mucosa. 
B)  consists of the myenteric plexus and the celiac plexus. 
C)  contains sympathetic neurons and fibers. 
D)  controls movement and secretion of the digestive tract. 
E)  is a valve in the GI tract. 
A)  is found in the mucosa. 
B)  consists of the myenteric plexus and the celiac plexus. 
C)  contains sympathetic neurons and fibers. 
D)  controls movement and secretion of the digestive tract. 
E)  is a valve in the GI tract.

Question 11

Food is prevented from entering the nasal cavity during swallowing by the ________.

Accepted Answer

A)  epiglottis 
B)  palatine tonsils 
C)  tongue 
D)  soft palate 
E)  hard palate 
A)  epiglottis 
B)  palatine tonsils 
C)  tongue 
D)  soft palate 
E)  hard palate

Question 12

Which part of the pharynx is NOT involved with food transport?

Accepted Answer

A)  Nasopharynx 
B)  Oropharynx 
C)  Laryngopharynx 
A)  Nasopharynx 
B)  Oropharynx 
C)  Laryngopharynx

Question 13

Inability of the pyloric sphincter to open would prevent

Accepted Answer

A)  food from entering the stomach. 
B)  stomach acid from being released. 
C)  digestive enzymes from being released. 
D)  food from entering the small intestine. 
E)  the making of chyme. 
A)  food from entering the stomach. 
B)  stomach acid from being released. 
C)  digestive enzymes from being released. 
D)  food from entering the small intestine. 
E)  the making of chyme.

Question 14

The mucosa of the colon

Accepted Answer

A)  contains many mucus-secreting goblet cells. 
B)  exchanges Na+ for Cl−. 
C)  actively secretes Na+ and Cl−. 
D)  produces enzymes that complete lipid digestion. 
E)  consists of stratified columnar epithelium. 
A)  contains many mucus-secreting goblet cells. 
B)  exchanges Na+ for Cl−. 
C)  actively secretes Na+ and Cl−. 
D)  produces enzymes that complete lipid digestion. 
E)  consists of stratified columnar epithelium.

Question 15

Which of the following organs is part of the digestive tract?

Accepted Answer

A)  Salivary gland 
B)  Liver 
C)  Gallbladder 
D)  Stomach 
E)  Pancreas 
A)  Salivary gland 
B)  Liver 
C)  Gallbladder 
D)  Stomach 
E)  Pancreas

Question 16

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 17

Which layer of the small intestine wall contains cells with microvilli?

Accepted Answer

A)  Submucosa 
B)  Mucosa 
C)  Muscularis 
D)  Serosa 
E)  Adventitia 
A)  Submucosa 
B)  Mucosa 
C)  Muscularis 
D)  Serosa 
E)  Adventitia

Question 18

Enzymes secreted by the small intestine include ________.

Accepted Answer

A)  disaccharidases 
B)  secretin 
C)  cholecystokinin 
D)  bile 
E)  histamine 
A)  disaccharidases 
B)  secretin 
C)  cholecystokinin 
D)  bile 
E)  histamine

Question 19

Where does the majority of nutrient absorption occur?

Accepted Answer

A)  The stomach and duodenum 
B)  The duodenum and ileum 
C)  The jejunum and duodenum 
D)  The ileum and jejunum 
A)  The stomach and duodenum 
B)  The duodenum and ileum 
C)  The jejunum and duodenum 
D)  The ileum and jejunum

Question 20

Use the key to choose the best answer.
-(1) Number of villi in small intestine
(2) Number of villi in large intestine

Accepted Answer

A) First item is greater than the second item. 
B) First item is less than the second item. 
C) First item is equal or nearly equal to the second item. 
A) First item is greater than the second item. 
B) First item is less than the second item. 
C) First item is equal or nearly equal to the second item.

Exam 24: Digestive System

Feces consist of ________.

Which of the following statements applies to the ileocecal sphincter?

Which of the following will stimulate intestinal motility?

Mastication

What is the function of enteric sensory neurons?

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

Use the key to choose the best answer. -(1) Amount of bicarbonate in the aqueous component of pancreatic juice (2) Amount of bicarbonate in the enzymatic portion of pancreatic juice

Which of the following lipoproteins contains the highest percentage of cholesterol?

What connects the gallbladder to the common bile duct?

The enteric plexus

Food is prevented from entering the nasal cavity during swallowing by the ________.

Which part of the pharynx is NOT involved with food transport?

Inability of the pyloric sphincter to open would prevent

The mucosa of the colon

Which of the following organs is part of the digestive tract?

Salivary gland secretion is primarily controlled by the

Which layer of the small intestine wall contains cells with microvilli?

Enzymes secreted by the small intestine include ________.

Where does the majority of nutrient absorption occur?

Use the key to choose the best answer. -(1) Number of villi in small intestine (2) Number of villi in large intestine

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joint 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-Base Balance

Reproductive System

Development, Growth, Aging, and Genetics

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