Question 1

Oxygen is carried in blood

Accepted Answer

A) Bound to hemoglobin 
B) Dissolved in the plasma 
C) Dissolved in the cytosol of erythrocytes 
D) Both bound to hemoglobin and dissolved in the cytosol of erythrocytes are correct 
E) All of the choices are correct 
A) Bound to hemoglobin 
B) Dissolved in the plasma 
C) Dissolved in the cytosol of erythrocytes 
D) Both bound to hemoglobin and dissolved in the cytosol of erythrocytes are correct 
E) All of the choices are correct E

Question 2

Stimuli or conditions that would tend to increase ventilation include

Accepted Answer

A) Lower than normal blood $\mathrm { P } _ { \mathrm { CO } _ { 2 } }$ 
B) Higher than normal blood pH 
C) Breathing carbon monoxide 
D) Iron-deficiency anemia 
E) Breathing air with reduced $\mathrm { P } _ { \mathrm { CO } _ { 2 } }$ 
A) Lower than normal blood $\mathrm { P } _ { \mathrm { CO } _ { 2 } }$ 
B) Higher than normal blood pH 
C) Breathing carbon monoxide 
D) Iron-deficiency anemia 
E) Breathing air with reduced $\mathrm { P } _ { \mathrm { CO } _ { 2 } }$ E

Question 3

Carbonic anhydrase catalyzes the chemical combination of

Accepted Answer

A) H2O and O2 
B) H2O and CO2 
C) H2O and CO 
D) H+ and HCO3- 
E) None of these choices 
A) H2O and O2 
B) H2O and CO2 
C) H2O and CO 
D) H+ and HCO3- 
E) None of these choices B

Question 4

Inhalation/inspiration occurs as a result of

Accepted Answer

A) An upward movement of the diaphragm 
B) Movement of the ribs closer together due to contraction of the inspiratory/inhalatory intercostal muscles 
C) A downward movement of the diaphragm 
D) An upward movement of the diaphragm and movement of the ribs closer together due to contraction of the inspiratory/inhalatory intercostal muscles 
E) Movement of the ribs closer together due to contraction of the inspiratory/inhalatory intercostal muscles and a downward movement of the diaphragm 
A) An upward movement of the diaphragm 
B) Movement of the ribs closer together due to contraction of the inspiratory/inhalatory intercostal muscles 
C) A downward movement of the diaphragm 
D) An upward movement of the diaphragm and movement of the ribs closer together due to contraction of the inspiratory/inhalatory intercostal muscles 
E) Movement of the ribs closer together due to contraction of the inspiratory/inhalatory intercostal muscles and a downward movement of the diaphragm

Question 5

A respiratory physiologist has measured ventilation parameters for each of three subjects: Tidal volume (TV); Respiratory rate (RR),and Anatomic dead space volume (ADSV). $$\begin{array} { | l | r | r | r | } 
\hline & { \text { TV } } & { \text { RR } } & { \text { ADV } } \
\hline \text { Tom: } & 200 \mathrm { ml } & 40 / \mathrm { min } & 150 \mathrm { ml } \
\hline \text { Dick: } & 500 \mathrm { ml } & 10 / \mathrm { min } & 150 \mathrm { ml } \
\hline \text { Harry: } & 1000 \mathrm { ml } & 5 / \mathrm { min } & 150 \mathrm { ml } \
\hline
\end{array}$$ Which of the following statements accurately compares the alveolar ventilation in the three men?

Accepted Answer

A) Tom's is the largest; Dick's and Harry's are the same 
B) Tom's is the smallest; Dick's and Harry's are the same 
C) Tom's is greater than Dick's, which is greater than Harry's 
D) Dick's is greater than Harry's, which is greater than Tom's 
E) Harry's is greater than Dick's, which is greater than Tom's 
A) Tom's is the largest; Dick's and Harry's are the same 
B) Tom's is the smallest; Dick's and Harry's are the same 
C) Tom's is greater than Dick's, which is greater than Harry's 
D) Dick's is greater than Harry's, which is greater than Tom's 
E) Harry's is greater than Dick's, which is greater than Tom's

Question 6

In order for the lungs to function normally,the intrapleural pressure must

Accepted Answer

A) Be lower than alveolar pressure 
B) Be between +5 and +10 mm Hg above atmospheric pressure 
C) Alternate between being less than and greater than atmospheric pressure 
D) Change as the respiratory demands of the body change 
E) Be the same as atmospheric pressure 
A) Be lower than alveolar pressure 
B) Be between +5 and +10 mm Hg above atmospheric pressure 
C) Alternate between being less than and greater than atmospheric pressure 
D) Change as the respiratory demands of the body change 
E) Be the same as atmospheric pressure

Question 7

If lung disease results in an arterial $P _ { o _ { 2 } }$ of 80 mm Hg,the ability of the blood to carry O2 to the tissues is severely compromised.

Accepted Answer

A) True 
 B)False

Question 8

Lung compliance is reduced in

Accepted Answer

A) Respiratory distress syndrome of the newborn 
B) Prolonged shallow breathing 
C) Emphysema 
D) Respiratory distress syndrome of the newborn and prolonged shallow breathing 
E) All of the choices are correct 
A) Respiratory distress syndrome of the newborn 
B) Prolonged shallow breathing 
C) Emphysema 
D) Respiratory distress syndrome of the newborn and prolonged shallow breathing 
E) All of the choices are correct

Question 9

Compared to healthy people who live at sea level,arterial $P _ { o _ { 2 } }$ is lower in people who

Accepted Answer

A) Live at high altitude 
B) Have pulmonary edema 
C) Have iron-deficiency anemia 
D) Both live at high altitude and have pulmonary edema are correct 
E) All of the choices are correct 
A) Live at high altitude 
B) Have pulmonary edema 
C) Have iron-deficiency anemia 
D) Both live at high altitude and have pulmonary edema are correct 
E) All of the choices are correct

Question 10

The medullary inhalatory/inspiratory neurons receive inhibitory neural input from the pons and also from pulmonary stretch receptors.

Accepted Answer

A) True 
 B)False

Question 11

The total dead space in the lungs includes anatomic dead space and any portion of the alveoli that has little or no blood supply.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following statements regarding control of respiration is correct?

Accepted Answer

A) A slight decrease in arterial $P _ { o _ { 2 } }$) is a stronger stimulus for increased ventilation than is a comparable decrease in arterial $P _ { o _ { 2 } }$ 
B) The most important signal for regulating ventilation is the H ion concentration of arterial blood 
C) Increased concentrations of lactic acid stimulate ventilation primarily by acting on peripheral chemoreceptors 
D) All of the choices are correct 
E) None of the choices are correct 
A) A slight decrease in arterial $P _ { o _ { 2 } }$) is a stronger stimulus for increased ventilation than is a comparable decrease in arterial $P _ { o _ { 2 } }$ 
B) The most important signal for regulating ventilation is the H ion concentration of arterial blood 
C) Increased concentrations of lactic acid stimulate ventilation primarily by acting on peripheral chemoreceptors 
D) All of the choices are correct 
E) None of the choices are correct

Question 13

Under normal circumstances,an increase in transpulmonary pressure will result in

Accepted Answer

A) Inhalation/inspiration 
B) Exhalation/expiration 
C) A collapsed lung 
D) All of these things 
E) None of these things 
A) Inhalation/inspiration 
B) Exhalation/expiration 
C) A collapsed lung 
D) All of these things 
E) None of these things

Question 14

If a tissue increases its metabolism enough to drop its interstitial $P _ { o _ { 2 } }$ to half the resting venous value,the amount of O2 available from oxyhemoglobin will be more than twice that for the resting tissue.

Accepted Answer

A) True 
 B)False

Question 15

Asthma is caused by

Accepted Answer

A) Loss of alveoli 
B) Inflammation of the bronchioles 
C) Elevation of intrapleural pressure to equal atmospheric pressure 
D) Loss of alveoli and inflammation of the bronchioles 
E) Loss of alveoli and elevation of intrapleural pressure to equal atmospheric pressure 
A) Loss of alveoli 
B) Inflammation of the bronchioles 
C) Elevation of intrapleural pressure to equal atmospheric pressure 
D) Loss of alveoli and inflammation of the bronchioles 
E) Loss of alveoli and elevation of intrapleural pressure to equal atmospheric pressure

Question 16

Doubling the rate of breathing will cause a greater increase in alveolar ventilation than will doubling the depth of inspiration.

Accepted Answer

A) True 
 B)False

Question 17

The rhythmic contractions and relaxations of the inhalatory/inspiratory muscles are dependent upon spontaneous depolarizations of the diaphragm.

Accepted Answer

A) True 
 B)False

Question 18

The skeletal muscles involved in producing the contractions related to inspiration are stimulated by motor impulses originating from

Accepted Answer

A) The ventral respiratory group of the medulla oblongata 
B) The Pre-Botzinger complex 
C) The dorsal respiratory group of the medulla oblongata 
D) Pneumotaxic center of the pons 
E) Apneustic center of the pons 
A) The ventral respiratory group of the medulla oblongata 
B) The Pre-Botzinger complex 
C) The dorsal respiratory group of the medulla oblongata 
D) Pneumotaxic center of the pons 
E) Apneustic center of the pons

Question 19

The type II alveolar cells are important because they

Accepted Answer

A) Produce surfactant 
B) Secrete mucus 
C) Phagocytize bacteria and other foreign particles 
D) Do all of these things 
E) Do none of these things 
A) Produce surfactant 
B) Secrete mucus 
C) Phagocytize bacteria and other foreign particles 
D) Do all of these things 
E) Do none of these things

Question 20

Which of the following drugs,administered as an aerosol spray,would be most likely to help a victim of an asthmatic attack?

Accepted Answer

A) Pulmonary surfactant 
B) A beta-adrenergic agonist 
C) A muscarinic agonist 
D) Histamine 
E) A beta-adrenergic antagonist 
A) Pulmonary surfactant 
B) A beta-adrenergic agonist 
C) A muscarinic agonist 
D) Histamine 
E) A beta-adrenergic antagonist

Oxygen is carried in blood

Stimuli or conditions that would tend to increase ventilation include

Carbonic anhydrase catalyzes the chemical combination of

Inhalation/inspiration occurs as a result of

In order for the lungs to function normally,the intrapleural pressure must

If lung disease results in an arterial $P _ { o _ { 2 } }$ of 80 mm Hg,the ability of the blood to carry O₂ to the tissues is severely compromised.

Lung compliance is reduced in

Compared to healthy people who live at sea level,arterial $P _ { o _ { 2 } }$ is lower in people who

The medullary inhalatory/inspiratory neurons receive inhibitory neural input from the pons and also from pulmonary stretch receptors.

The total dead space in the lungs includes anatomic dead space and any portion of the alveoli that has little or no blood supply.

Which of the following statements regarding control of respiration is correct?

Under normal circumstances,an increase in transpulmonary pressure will result in

If a tissue increases its metabolism enough to drop its interstitial $P _ { o _ { 2 } }$ to half the resting venous value,the amount of O₂ available from oxyhemoglobin will be more than twice that for the resting tissue.

Asthma is caused by

Doubling the rate of breathing will cause a greater increase in alveolar ventilation than will doubling the depth of inspiration.

The rhythmic contractions and relaxations of the inhalatory/inspiratory muscles are dependent upon spontaneous depolarizations of the diaphragm.

The skeletal muscles involved in producing the contractions related to inspiration are stimulated by motor impulses originating from

The type II alveolar cells are important because they

Which of the following drugs,administered as an aerosol spray,would be most likely to help a victim of an asthmatic attack?

Homeostasis: a Framework for Human Physiology

Chemical Composition of the Body

Cellular Structure, Proteins, and Metabolism

Movement of Molecules Across Cell Membranes

Control of Cells by Chemical Messengers

Neuronal Signaling and the Structure of the Nervous System

Sensory Physiology

Consciousness, the Brain, and Behavior

Muscle

Control of Body Movement

The Endocrine System

Cardiovascular Physiology

The Kidneys and Regulation of Water and Inorganic Ions

The Digestion and Absorption of Food

Regulation of Organic Metabolism and Energy Balance

Reproduction

The Immune System

Medical Physiology: Integration Using Clinical Cases

Filters

Exam 13: Respiratory Physiology

Oxygen is carried in blood

Stimuli or conditions that would tend to increase ventilation include

Carbonic anhydrase catalyzes the chemical combination of

Inhalation/inspiration occurs as a result of

In order for the lungs to function normally,the intrapleural pressure must

If lung disease results in an arterial Po2P _ { o _ { 2 } }Po2​​ of 80 mm Hg,the ability of the blood to carry O2 to the tissues is severely compromised.

Lung compliance is reduced in

Compared to healthy people who live at sea level,arterial Po2P _ { o _ { 2 } }Po2​​ is lower in people who

The medullary inhalatory/inspiratory neurons receive inhibitory neural input from the pons and also from pulmonary stretch receptors.

The total dead space in the lungs includes anatomic dead space and any portion of the alveoli that has little or no blood supply.

Which of the following statements regarding control of respiration is correct?

Under normal circumstances,an increase in transpulmonary pressure will result in

If a tissue increases its metabolism enough to drop its interstitial Po2P _ { o _ { 2 } }Po2​​ to half the resting venous value,the amount of O2 available from oxyhemoglobin will be more than twice that for the resting tissue.

Asthma is caused by

Doubling the rate of breathing will cause a greater increase in alveolar ventilation than will doubling the depth of inspiration.

The rhythmic contractions and relaxations of the inhalatory/inspiratory muscles are dependent upon spontaneous depolarizations of the diaphragm.

The skeletal muscles involved in producing the contractions related to inspiration are stimulated by motor impulses originating from

The type II alveolar cells are important because they

Which of the following drugs,administered as an aerosol spray,would be most likely to help a victim of an asthmatic attack?

Homeostasis: a Framework for Human Physiology

Chemical Composition of the Body

Cellular Structure, Proteins, and Metabolism

Movement of Molecules Across Cell Membranes

Control of Cells by Chemical Messengers

Neuronal Signaling and the Structure of the Nervous System

Sensory Physiology

Consciousness, the Brain, and Behavior

Muscle

Control of Body Movement

The Endocrine System

Cardiovascular Physiology

The Kidneys and Regulation of Water and Inorganic Ions

The Digestion and Absorption of Food

Regulation of Organic Metabolism and Energy Balance

Reproduction

The Immune System

Medical Physiology: Integration Using Clinical Cases

Filters

If lung disease results in an arterial $P _ { o _ { 2 } }$ of 80 mm Hg,the ability of the blood to carry O₂ to the tissues is severely compromised.

Compared to healthy people who live at sea level,arterial $P _ { o _ { 2 } }$ is lower in people who

If a tissue increases its metabolism enough to drop its interstitial $P _ { o _ { 2 } }$ to half the resting venous value,the amount of O₂ available from oxyhemoglobin will be more than twice that for the resting tissue.