Question 1

Microvilli establish a brush border in the small intestine.

Accepted Answer

A) True 
 B)False

Question 2

Respiration is inhibited throughout the entire time that swallowing is taking place.

Accepted Answer

A) True 
 B)False

Question 3

Secretions from digestive organs include

Accepted Answer

A)  enzymes 
B)  bile 
C)  mucus 
D)  hormones 
E)  all of these 
A)  enzymes 
B)  bile 
C)  mucus 
D)  hormones 
E)  all of these

Question 4

Which statement is incorrect?

Accepted Answer

A)  Salivation is entirely under neural control. 
B)  Parasympathetic stimulation and sympathetic stimulation both increase salivary secretion. 
C)  The acquired salivary reflex occurs upon stimulation of chemoreceptors and/or pressure receptors in the mouth. 
D)  Parasympathetic stimulation produces a watery saliva rich in enzymes. 
E)  The salivary center is located in the medulla. 
A)  Salivation is entirely under neural control. 
B)  Parasympathetic stimulation and sympathetic stimulation both increase salivary secretion. 
C)  The acquired salivary reflex occurs upon stimulation of chemoreceptors and/or pressure receptors in the mouth. 
D)  Parasympathetic stimulation produces a watery saliva rich in enzymes. 
E)  The salivary center is located in the medulla.

Question 5

Deglutition refers to the process of chewing.

Accepted Answer

A) True 
 B)False

Question 6

What prevents food from entering the nasal passages during swallowing?

Accepted Answer

A)  elevation of the uvula 
B)  contraction of the pharyngeal muscles 
C)  positioning of the tongue 
D)  tight apposition of the vocal cords over the glottis 
E)  elevation of the epiglottis over the nasopharynx 
A)  elevation of the uvula 
B)  contraction of the pharyngeal muscles 
C)  positioning of the tongue 
D)  tight apposition of the vocal cords over the glottis 
E)  elevation of the epiglottis over the nasopharynx

Question 7

The contents of the digestive tract are technically outside of the body.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is accomplished by chewing?

Accepted Answer

A)  Grinding and breaking up food 
B)  Mixing food with saliva to facilitate swallowing 
C)  Reflexively increasing salivary and gastric secretions 
D)  Reflexively increasing pancreatic and bile secretions 
E)  All of these 
A)  Grinding and breaking up food 
B)  Mixing food with saliva to facilitate swallowing 
C)  Reflexively increasing salivary and gastric secretions 
D)  Reflexively increasing pancreatic and bile secretions 
E)  All of these

Question 9

Gastric mixing takes place primarily in the antrum of the stomach.

Accepted Answer

A) True 
 B)False

Question 10

H+ ions are actively secreted against a large concentration gradient into the stomach; Cl- secretion follows passively.

Accepted Answer

A) True 
 B)False

Question 11

Most of the fluid presented to the small intestine for absorption has been ingested in the most recent meal.

Accepted Answer

A) True 
 B)False

Question 12

Complete each of the following statments.
____________________ are the microscopic projections of the absorptive cells of the small intestine.

Accepted Answer

The answer of Complete each of the following statments.
____________________ are...

Question 13

Which of the following is not a function of saliva?

Accepted Answer

A)  Facilitates swallowing 
B)  Serves as a solvent for molecules that stimulate taste buds 
C)  Dissolves glucose to facilitate its absorption by the oral mucosa 
D)  Has antibacterial action 
E)  Aids speech 
A)  Facilitates swallowing 
B)  Serves as a solvent for molecules that stimulate taste buds 
C)  Dissolves glucose to facilitate its absorption by the oral mucosa 
D)  Has antibacterial action 
E)  Aids speech

Question 14

Bile is secreted continuously by the gallbladder.

Accepted Answer

A) True 
 B)False

Question 15

The small intestinal digestive enzymes

Accepted Answer

A)  are secreted into the lumen, where they perform their function 
B)  act intracellularly within the brush borders 
C)  complete the digestion of carbohydrates 
D)  complete the digestion of carbohydrates, and are secreted into the lumen, where they perform their function 
E)  act intracellularly within the brush borders and complete the digestion of carbohydrates 
A)  are secreted into the lumen, where they perform their function 
B)  act intracellularly within the brush borders 
C)  complete the digestion of carbohydrates 
D)  complete the digestion of carbohydrates, and are secreted into the lumen, where they perform their function 
E)  act intracellularly within the brush borders and complete the digestion of carbohydrates

Question 16

Which of the following is not a side effect of constipation?

Accepted Answer

A)  headache 
B)  nausea 
C)  gradual buildup of toxins 
D)  lack of appetite 
E)  all of these 
A)  headache 
B)  nausea 
C)  gradual buildup of toxins 
D)  lack of appetite 
E)  all of these

Question 17

Complete each of the following statments.
The islets of ____________________ are the endocrine cells of the pancreas.

Accepted Answer

The answer of Complete each of the following statments.
The islets...

Question 18

Which is not a brush border enzyme?

Accepted Answer

A)  enterokinase 
B)  aminopeptidase 
C)  lipase 
D)  lactase 
E)  maltase 
A)  enterokinase 
B)  aminopeptidase 
C)  lipase 
D)  lactase 
E)  maltase

Question 19

Considerable vitamin absorption occurs passively in the stomach.

Accepted Answer

A) True 
 B)False

Question 20

The enteric nervous system includes

Accepted Answer

A)  the myenteric plexus. 
B)  the submucosal plexus. 
C)  vagal nerve efferents. 
D)  the myenteric plexus and the submucosal plexus. 
E)  the myenteric plexus and vagal nerve efferents. 
A)  the myenteric plexus. 
B)  the submucosal plexus. 
C)  vagal nerve efferents. 
D)  the myenteric plexus and the submucosal plexus. 
E)  the myenteric plexus and vagal nerve efferents.

Exam 16: A--The Digestive System

Microvilli establish a brush border in the small intestine.

Respiration is inhibited throughout the entire time that swallowing is taking place.

Secretions from digestive organs include

Which statement is incorrect?

Deglutition refers to the process of chewing.

What prevents food from entering the nasal passages during swallowing?

The contents of the digestive tract are technically outside of the body.

Which of the following is accomplished by chewing?

Gastric mixing takes place primarily in the antrum of the stomach.

H+ ions are actively secreted against a large concentration gradient into the stomach; Cl- secretion follows passively.

Most of the fluid presented to the small intestine for absorption has been ingested in the most recent meal.

Complete each of the following statments. ____________________ are the microscopic projections of the absorptive cells of the small intestine.

Which of the following is not a function of saliva?

Bile is secreted continuously by the gallbladder.

The small intestinal digestive enzymes

Which of the following is not a side effect of constipation?

Complete each of the following statments. The islets of ____________________ are the endocrine cells of the pancreas.

Which is not a brush border enzyme?

Considerable vitamin absorption occurs passively in the stomach.

The enteric nervous system includes

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters

H⁺ ions are actively secreted against a large concentration gradient into the stomach; Cl^- secretion follows passively.