Question 1

The percent of hemoglobin saturation

Accepted Answer

A)  decreases as PO2 increases. 
B)  decreases as PCO2 increases. 
C)  decreases as H+ decreases. 
D)  decreases as body temperature decreases. 
E)  none of these answers. 
A)  decreases as PO2 increases. 
B)  decreases as PCO2 increases. 
C)  decreases as H+ decreases. 
D)  decreases as body temperature decreases. 
E)  none of these answers.

Question 2

The inspiratory neurons

Accepted Answer

A)  activate the phrenic nerve, bringing about contraction of the diaphragm. 
B)  are stimulated by stretch receptors. 
C)  are inhibited by the expiratory neurons. 
D)  two of these answers. 
E)  all of these answers. 
A)  activate the phrenic nerve, bringing about contraction of the diaphragm. 
B)  are stimulated by stretch receptors. 
C)  are inhibited by the expiratory neurons. 
D)  two of these answers. 
E)  all of these answers.

Question 3

The quantity of air that will flow into and out of the lungs depends solely on the radius of the respiratory airways.

Accepted Answer

A) True 
 B)False

Question 4

The following questions refer to the accompanying diagram of a normal spirogram. The wave labels have been removed and replaced with letters A-H. Match the letter with list of missing terms below to complete the diagram.
-residual volume

Accepted Answer

The answer of   
The following questions refer to...

Question 5

Which of the following statements concerning pulmonary surfactant is incorrect?

Accepted Answer

A)  pulmonary surfactant is secreted by Type II alveolar cells. 
B)  pulmonary surfactant is deficient in newborn respiratory distress syndrome. 
C)  pulmonary surfactant promotes elastic recoil of the lungs. 
D)  the cohesive force between a water molecule and an adjacent pulmonary surfactant molecule is much lower than the cohesive force between two adjacent water molecules. 
E)  pulmonary surfactant reduces surface tension. 
A)  pulmonary surfactant is secreted by Type II alveolar cells. 
B)  pulmonary surfactant is deficient in newborn respiratory distress syndrome. 
C)  pulmonary surfactant promotes elastic recoil of the lungs. 
D)  the cohesive force between a water molecule and an adjacent pulmonary surfactant molecule is much lower than the cohesive force between two adjacent water molecules. 
E)  pulmonary surfactant reduces surface tension.

Question 6

MATCHING
Indicate which lung volume or capacity is being described in the column below by filling in the appropriate letter in the blank. There is only one correct answer for each question and each answer may be used more than once.
-maximum volume of air that can be moved in and out during a single breath

Accepted Answer

A) vital capacity 
B) respiratory rate 
C) FEV1 
D) tidal volume 
E) residual volume
F)total lung capacity
G)functional residual capacity
H)alveolar ventilation
I)pulmonary ventilation
J)inspiratory reserve volume
K)expiratory reserve volume
L)inspiratory capacity
M)anatomic dead space volume 
A) vital capacity 
B) respiratory rate 
C) FEV1 
D) tidal volume 
E) residual volume
F)total lung capacity
G)functional residual capacity
H)alveolar ventilation
I)pulmonary ventilation
J)inspiratory reserve volume
K)expiratory reserve volume
L)inspiratory capacity
M)anatomic dead space volume

Question 7

Indicate the effect the following changes would have on oxygen release from Hb.
-temperature has increased

Accepted Answer

A) this change would increase the rate 
B) this change would decrease the rate 
C) this change would have no effect on the rate 
A) this change would increase the rate 
B) this change would decrease the rate 
C) this change would have no effect on the rate

Question 8

Which of the following promotes elastic recoil of the lungs?

Accepted Answer

A)  elastic fibers in the lung. 
B)  surface tension of the fluid lining the alveoli. 
C)  pulmonary surfactant. 
D)  both (a) and (b) above. 
E)  all of these answers. 
A)  elastic fibers in the lung. 
B)  surface tension of the fluid lining the alveoli. 
C)  pulmonary surfactant. 
D)  both (a) and (b) above. 
E)  all of these answers.

Question 9

The entire sequence of events involved in the exchange of O? and CO? between the body cells and the environment is known as

Accepted Answer

A)  internal respiration. 
B)  external respiration. 
C)  ventilation. 
D)  breathing. 
E)  both ventilation and breathing are correct. 
A)  internal respiration. 
B)  external respiration. 
C)  ventilation. 
D)  breathing. 
E)  both ventilation and breathing are correct.

Question 10

The partial pressure of oxygen in the

Accepted Answer

A)  atmospheric air averages 79% of total atmospheric pressure. 
B)  blood is the most important factor that determines the extent to which O2 will combine with hemoglobin. 
C)  arterial blood is decreased when hemoglobin preferentially combines with CO rather than O2. 
D)  both (a) and (b) above. 
E)  all of these answers. 
A)  atmospheric air averages 79% of total atmospheric pressure. 
B)  blood is the most important factor that determines the extent to which O2 will combine with hemoglobin. 
C)  arterial blood is decreased when hemoglobin preferentially combines with CO rather than O2. 
D)  both (a) and (b) above. 
E)  all of these answers.

Question 11

At a constant temperature, the pressure that a gas exerts depends on the volume that it occupies.

Accepted Answer

A) True 
 B)False

Question 12

The ___________ chemoreceptors are not sensitive to modest reductions in the arterial partial pressure of oxygen but respond only when dangerously low arterial partial pressures of oxygen is reached.

Accepted Answer

The answer of The ___________ chemoreceptors are not sensitive to...

Question 13

MATCHING
Indicate which lung volume or capacity is being described in the column below by filling in the appropriate letter in the blank. There is only one correct answer for each question and each answer may be used more than once.
-the extra volume of air that can be actively expired by contraction of expiratory muscles beyond that normally expired

Accepted Answer

A) vital capacity 
B) respiratory rate 
C) FEV1 
D) tidal volume 
E) residual volume
F)total lung capacity
G)functional residual capacity
H)alveolar ventilation
I)pulmonary ventilation
J)inspiratory reserve volume
K)expiratory reserve volume
L)inspiratory capacity
M)anatomic dead space volume 
A) vital capacity 
B) respiratory rate 
C) FEV1 
D) tidal volume 
E) residual volume
F)total lung capacity
G)functional residual capacity
H)alveolar ventilation
I)pulmonary ventilation
J)inspiratory reserve volume
K)expiratory reserve volume
L)inspiratory capacity
M)anatomic dead space volume

Question 14

The primary regulator of the magnitude of ventilation in normal circumstances is the

Accepted Answer

A)  H+ concentration of the brain extracellular fluid monitored by central chemoreceptors. 
B)  PO2 of the arterial blood monitored by central chemoreceptors. 
C)  PO2 of the arterial blood monitored by peripheral chemoreceptors. 
D)  PCO2 of arterial blood monitored by central chemoreceptors. 
E)  PCO2 of arterial blood monitored by peripheral chemoreceptors. 
A)  H+ concentration of the brain extracellular fluid monitored by central chemoreceptors. 
B)  PO2 of the arterial blood monitored by central chemoreceptors. 
C)  PO2 of the arterial blood monitored by peripheral chemoreceptors. 
D)  PCO2 of arterial blood monitored by central chemoreceptors. 
E)  PCO2 of arterial blood monitored by peripheral chemoreceptors.

Question 15

The amount of oxygen unloaded from hemoglobin at the tissue level increases when

Accepted Answer

A)  PCO2  in the tissue increases. 
B)  the concentration of DPG in the red blood cells increases. 
C)  the concentration of DPG in the red blood cells decreases. 
D)  both (a) and (b) above. 
E)  both (a) and (c) above. 
A)  PCO2  in the tissue increases. 
B)  the concentration of DPG in the red blood cells increases. 
C)  the concentration of DPG in the red blood cells decreases. 
D)  both (a) and (b) above. 
E)  both (a) and (c) above.

Question 16

At the end of inspiration and at the end of expiration, intrapleural pressure is always equal to atmospheric pressure.

Accepted Answer

A) True 
 B)False

Question 17

When intra-alveolar pressure becomes greater than atmospheric pressure,

Accepted Answer

A)  air will flow out of the lungs. 
B)  air will flow into the lungs. 
C)  there will be no air flow. 
D)  both (a) and (b) above. 
E)  none of these answers. 
A)  air will flow out of the lungs. 
B)  air will flow into the lungs. 
C)  there will be no air flow. 
D)  both (a) and (b) above. 
E)  none of these answers.

Question 18

Respiration is accomplished entirely by the respiratory system.

Accepted Answer

A) True 
 B)False

Question 19

According to ____________________ law, at any constant temperature, the pressure of a gas varies inversely with the volume of the gas.

Accepted Answer

The answer of According to ____________________ law, at any constant...

Question 20

A pneumothorax would exist if intrapleural pressure is 756 mm Hg and the intrapleural pressure is 758 mm Hg.

Accepted Answer

A) True 
 B)False

The percent of hemoglobin saturation

The inspiratory neurons

The quantity of air that will flow into and out of the lungs depends solely on the radius of the respiratory airways.

The following questions refer to the accompanying diagram of a normal spirogram. The wave labels have been removed and replaced with letters A-H. Match the letter with list of missing terms below to complete the diagram. -residual volume

Which of the following statements concerning pulmonary surfactant is incorrect?

Indicate the effect the following changes would have on oxygen release from Hb. -temperature has increased

Which of the following promotes elastic recoil of the lungs?

The entire sequence of events involved in the exchange of O? and CO? between the body cells and the environment is known as

The partial pressure of oxygen in the

At a constant temperature, the pressure that a gas exerts depends on the volume that it occupies.

The ___________ chemoreceptors are not sensitive to modest reductions in the arterial partial pressure of oxygen but respond only when dangerously low arterial partial pressures of oxygen is reached.

The primary regulator of the magnitude of ventilation in normal circumstances is the

The amount of oxygen unloaded from hemoglobin at the tissue level increases when

At the end of inspiration and at the end of expiration, intrapleural pressure is always equal to atmospheric pressure.

When intra-alveolar pressure becomes greater than atmospheric pressure,

Respiration is accomplished entirely by the respiratory system.

According to ____________________ law, at any constant temperature, the pressure of a gas varies inversely with the volume of the gas.

A pneumothorax would exist if intrapleural pressure is 756 mm Hg and the intrapleural pressure is 758 mm Hg.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division and Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood and Body Defenses

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

Filters

Exam 12: The Respiratory System

The percent of hemoglobin saturation

The inspiratory neurons

The quantity of air that will flow into and out of the lungs depends solely on the radius of the respiratory airways.

The following questions refer to the accompanying diagram of a normal spirogram. The wave labels have been removed and replaced with letters A-H. Match the letter with list of missing terms below to complete the diagram. -residual volume

Which of the following statements concerning pulmonary surfactant is incorrect?

Indicate the effect the following changes would have on oxygen release from Hb. -temperature has increased

Which of the following promotes elastic recoil of the lungs?

The entire sequence of events involved in the exchange of O? and CO? between the body cells and the environment is known as

The partial pressure of oxygen in the

At a constant temperature, the pressure that a gas exerts depends on the volume that it occupies.

The ___________ chemoreceptors are not sensitive to modest reductions in the arterial partial pressure of oxygen but respond only when dangerously low arterial partial pressures of oxygen is reached.

The primary regulator of the magnitude of ventilation in normal circumstances is the

The amount of oxygen unloaded from hemoglobin at the tissue level increases when

At the end of inspiration and at the end of expiration, intrapleural pressure is always equal to atmospheric pressure.

When intra-alveolar pressure becomes greater than atmospheric pressure,

Respiration is accomplished entirely by the respiratory system.

According to ____________________ law, at any constant temperature, the pressure of a gas varies inversely with the volume of the gas.

A pneumothorax would exist if intrapleural pressure is 756 mm Hg and the intrapleural pressure is 758 mm Hg.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division and Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood and Body Defenses

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

Filters