Question 1

What are the middle three layers (4-5-6)that an oxygen molecule must cross when moving from the alveoli into the blood?

Accepted Answer

A)  interstitial space, basement membrane of the capillary endothelium, and the capillary endothelium 
B)  the liquid lining the intra-alveolar membrane, alveolar epithelial cell, and the basement membrane of the alveolar epithelial cell 
C)  interstitial space, basement membrane of the capillary endothelium, and the intracellular fluid of the erythrocyte 
D)  plasma of the capillary blood, the erythrocyte membrane, and the intracellular fluid in the erythrocyte. 
A)  interstitial space, basement membrane of the capillary endothelium, and the capillary endothelium 
B)  the liquid lining the intra-alveolar membrane, alveolar epithelial cell, and the basement membrane of the alveolar epithelial cell 
C)  interstitial space, basement membrane of the capillary endothelium, and the intracellular fluid of the erythrocyte 
D)  plasma of the capillary blood, the erythrocyte membrane, and the intracellular fluid in the erythrocyte. A

Question 2

Which law is represented by the equation below?
V gas = [AD (P1-P2)] / T

Accepted Answer

A)  Fick's law 
B)  Dalton's law 
C)  Henry's law 
D)  Boyle's law 
A)  Fick's law 
B)  Dalton's law 
C)  Henry's law 
D)  Boyle's law A

Question 3

What is the normal value for the respiratory exchange ratio?

Accepted Answer

A)  0.8 
B)  1.0 
C)  0.6 
D)  1.25 
A)  0.8 
B)  1.0 
C)  0.6 
D)  1.25 A

Question 4

What is absolute humidity of alveolar gas?

Accepted Answer

A)  44 mg/L 
B)  47 mg/L 
C)  40 mg/L 
D)  21 mg/L 
A)  44 mg/L 
B)  47 mg/L 
C)  40 mg/L 
D)  21 mg/L

Question 5

When breathing room air,what is the PN₂ in the alveoli?

Accepted Answer

A)  573 mm Hg 
B)  593 mm Hg 
C)  700 mm Hg 
D)  473 mmHg 
A)  573 mm Hg 
B)  593 mm Hg 
C)  700 mm Hg 
D)  473 mmHg

Question 6

What is the term for the situation in which "the rate of gas transfer across the alveolar wall is a function of the amount of blood that flows past the alveoli" ?

Accepted Answer

A)  perfusion limited 
B)  diffusion limited 
C)  diffusion 
D)  penduluft 
A)  perfusion limited 
B)  diffusion limited 
C)  diffusion 
D)  penduluft

Question 7

In a healthy individual at rest,what is the average carbon dioxide tension of venous content blood as it enters the pulmonary capillary?

Accepted Answer

A)  46 mm Hg 
B)  40 mm Hg 
C)  35 mm Hg 
D)  27 mm Hg 
A)  46 mm Hg 
B)  40 mm Hg 
C)  35 mm Hg 
D)  27 mm Hg

Question 8

What is the definition of molecular water?

Accepted Answer

A)  water in the gaseous form 
B)  water in the liquid form 
C)  water in the solid form 
D)  water in either gaseous or liquid form 
A)  water in the gaseous form 
B)  water in the liquid form 
C)  water in the solid form 
D)  water in either gaseous or liquid form

Question 9

At sea level,what does the PN₂ of the atmosphere equal in mmHg ?

Accepted Answer

A)  593 mm Hg 
B)  760 mm Hg 
C)  159 mm Hg 
D)  100 mmHg 
A)  593 mm Hg 
B)  760 mm Hg 
C)  159 mm Hg 
D)  100 mmHg

Question 10

Which of the following conditions reduce the alveolar surface area?
I.Emphysema
II.Excessive airway secretions
III.Pneumothorax
IV.Sinusitits

Accepted Answer

A)  I, II, and III only 
B)  I, II, III, and IV 
C)  I and III only 
D)  I only 
A)  I, II, and III only 
B)  I, II, III, and IV 
C)  I and III only 
D)  I only

Question 11

Under normal resting conditions,what is the total transit time required for blood to move through the alveolar capillary system?

Accepted Answer

A)  0.75 seconds 
B)  0.25 seconds 
C)  0.5 seconds 
D)  1 second 
A)  0.75 seconds 
B)  0.25 seconds 
C)  0.5 seconds 
D)  1 second

Question 12

In a healthy adult at rest at sea level,what is the normal carbon dioxide gradient across the alveolar capillary membrane?

Accepted Answer

A)  6 mm Hg 
B)  60 mm Hg 
C)  40 mm Hg 
D)  27 mm Hg 
A)  6 mm Hg 
B)  60 mm Hg 
C)  40 mm Hg 
D)  27 mm Hg

Question 13

Why is supplemental oxygen indicate when acute alveolar inflammation is superimposed on chronic interstitial lung diseaset?

Accepted Answer

A)  Diffusion is indirectly related to thickness of the a-c membrane and directly related to the pressure gradient (P1-P2) so diffusion will be enhanced with supplemental O₂ 
B)  Diffusion is indirectly related to thickness of the a-c membrane and indirectly related to the pressure gradient (P1-P2) so diffusion will be enhanced with supplemental O₂ 
C)  Diffusion is directly related to thickness of the a-c membrane and directly related to the pressure gradient (P1-P2) so diffusion will be enhanced with supplemental O₂ 
D)  Diffusion is directly related to thickness of the a-c membrane and indirectly related to the pressure gradient (P1-P2) so diffusion will be enhanced with supplemental O₂ 
A)  Diffusion is indirectly related to thickness of the a-c membrane and directly related to the pressure gradient (P1-P2) so diffusion will be enhanced with supplemental O₂ 
B)  Diffusion is indirectly related to thickness of the a-c membrane and indirectly related to the pressure gradient (P1-P2) so diffusion will be enhanced with supplemental O₂ 
C)  Diffusion is directly related to thickness of the a-c membrane and directly related to the pressure gradient (P1-P2) so diffusion will be enhanced with supplemental O₂ 
D)  Diffusion is directly related to thickness of the a-c membrane and indirectly related to the pressure gradient (P1-P2) so diffusion will be enhanced with supplemental O₂

Question 14

Which gas law is the law of partial pressures?

Accepted Answer

A)  Dalton's law 
B)  Henry's law 
C)  Boyle's law 
D)  Graham's law 
A)  Dalton's law 
B)  Henry's law 
C)  Boyle's law 
D)  Graham's law

Question 15

What is the term for the movement of gas molecules from an area of high pressure to an area of low pressure?

Accepted Answer

A)  diffusion 
B)  osmosis 
C)  dispersion 
D)  ventilation 
A)  diffusion 
B)  osmosis 
C)  dispersion 
D)  ventilation

Question 16

At sea level,what would the PAO2equal if the PB is 760 mm Hg,the PaCO₂ is 40 mm Hg with F1O₂ 1.0?

Accepted Answer

A)  673 mm Hg 
B)  600 mm Hg 
C)  573 mm Hg 
D)  100 mm Hg 
A)  673 mm Hg 
B)  600 mm Hg 
C)  573 mm Hg 
D)  100 mm Hg

Question 17

When can the simplified alveolar gas equation be used?
I.PaCO₂ less than 60 mm Hg
II.PaCO₂ greater than 60 mm Hg
III.FIO₂ 0.6 or greater
IV.FIO₂ 0.6 or lower

Accepted Answer

A)  I and III only 
B)  II and IV only 
C)  I only 
D)  II only 
A)  I and III only 
B)  II and IV only 
C)  I only 
D)  II only

Question 18

For a healthy adult at rest,what is the normal pressure gradient for oxygen across the alveolar-capillary membrane when breathing room air at sea level?

Accepted Answer

A)  60 mm Hg 
B)  6 mm Hg 
C)  40 mm Hg 
D)  46 mm Hg 
A)  60 mm Hg 
B)  6 mm Hg 
C)  40 mm Hg 
D)  46 mm Hg

Question 19

When breathing FIO₂ 1.0 at seal level,what would the PN₂ in the alveoli equal?

Accepted Answer

A)  0 
B)  573 mm Hg 
C)  593 mm Hg 
D)  47 mm Hg 
A)  0 
B)  573 mm Hg 
C)  593 mm Hg 
D)  47 mm Hg

Question 20

What percentage of the atmosphere does nitrogen compose?

Accepted Answer

A)  78% 
B)  88% 
C)  68% 
D)  58% 
A)  78% 
B)  88% 
C)  68% 
D)  58%

What are the middle three layers (4-5-6)that an oxygen molecule must cross when moving from the alveoli into the blood?

Which law is represented by the equation below? V gas = [AD (P1-P2)] / T

What is the normal value for the respiratory exchange ratio?

What is absolute humidity of alveolar gas?

When breathing room air,what is the P_N₂ in the alveoli?

What is the term for the situation in which "the rate of gas transfer across the alveolar wall is a function of the amount of blood that flows past the alveoli" ?

In a healthy individual at rest,what is the average carbon dioxide tension of venous content blood as it enters the pulmonary capillary?

What is the definition of molecular water?

At sea level,what does the P_N₂ of the atmosphere equal in mmHg ?

Which of the following conditions reduce the alveolar surface area? I.Emphysema II.Excessive airway secretions III.Pneumothorax IV.Sinusitits

Under normal resting conditions,what is the total transit time required for blood to move through the alveolar capillary system?

In a healthy adult at rest at sea level,what is the normal carbon dioxide gradient across the alveolar capillary membrane?

Why is supplemental oxygen indicate when acute alveolar inflammation is superimposed on chronic interstitial lung diseaset?

Which gas law is the law of partial pressures?

What is the term for the movement of gas molecules from an area of high pressure to an area of low pressure?

At sea level,what would the P_AO2equal if the P_B is 760 mm Hg,the PaCO₂ is 40 mm Hg with F₁O₂ 1.0?

When can the simplified alveolar gas equation be used? I.PaCO₂ less than 60 mm Hg II.PaCO₂ greater than 60 mm Hg III.FIO₂ 0.6 or greater IV.FIO₂ 0.6 or lower

For a healthy adult at rest,what is the normal pressure gradient for oxygen across the alveolar-capillary membrane when breathing room air at sea level?

When breathing F_IO₂ 1.0 at seal level,what would the P_N₂ in the alveoli equal?

What percentage of the atmosphere does nitrogen compose?

The Anatomy and Physiology of the Respiratory System

Ventilation

Pulmonary Function Measurements

The Anatomy and Physiology of the Circulatory System

Oxygen and Carbon DioxideTransport

Acid Base Balance

Ventilation Perfusion Relationships

Control of Ventilation

Fetal Development and the Cardiopulmonary System

Aging and the Cardiopulmonary System

Electrophysiology of the Heart

The Standard 12 ECG System

ECG Interpretation

Hemodynamic Measurements

Renal Failure and Its Effects on the Cardiopulmonary System

Sleep Physiology and Its Relationship to the Cardiopulmonary System

Exercise and Its Effects on the Cardiopulmonary System

High Altitude and Its Effects on the Cardiopulmonary System

High Pressure Environments and Their Effects on the Cardiopulmonary System

Filters

Exam 4: The Diffusion of Pulmonary Gases

What are the middle three layers (4-5-6)that an oxygen molecule must cross when moving from the alveoli into the blood?

Which law is represented by the equation below? V gas = [AD (P1-P2)] / T

What is the normal value for the respiratory exchange ratio?

What is absolute humidity of alveolar gas?

When breathing room air,what is the PN₂ in the alveoli?

What is the term for the situation in which "the rate of gas transfer across the alveolar wall is a function of the amount of blood that flows past the alveoli" ?

In a healthy individual at rest,what is the average carbon dioxide tension of venous content blood as it enters the pulmonary capillary?

What is the definition of molecular water?

At sea level,what does the PN₂ of the atmosphere equal in mmHg ?

Which of the following conditions reduce the alveolar surface area? I.Emphysema II.Excessive airway secretions III.Pneumothorax IV.Sinusitits

Under normal resting conditions,what is the total transit time required for blood to move through the alveolar capillary system?

In a healthy adult at rest at sea level,what is the normal carbon dioxide gradient across the alveolar capillary membrane?

Why is supplemental oxygen indicate when acute alveolar inflammation is superimposed on chronic interstitial lung diseaset?

Which gas law is the law of partial pressures?

What is the term for the movement of gas molecules from an area of high pressure to an area of low pressure?

At sea level,what would the PAO2equal if the PB is 760 mm Hg,the PaCO₂ is 40 mm Hg with F1O₂ 1.0?

When can the simplified alveolar gas equation be used? I.PaCO₂ less than 60 mm Hg II.PaCO₂ greater than 60 mm Hg III.FIO₂ 0.6 or greater IV.FIO₂ 0.6 or lower

For a healthy adult at rest,what is the normal pressure gradient for oxygen across the alveolar-capillary membrane when breathing room air at sea level?

When breathing FIO₂ 1.0 at seal level,what would the PN₂ in the alveoli equal?

What percentage of the atmosphere does nitrogen compose?

The Anatomy and Physiology of the Respiratory System

Ventilation

Pulmonary Function Measurements

The Anatomy and Physiology of the Circulatory System

Oxygen and Carbon DioxideTransport

Acid Base Balance

Ventilation Perfusion Relationships

Control of Ventilation

Fetal Development and the Cardiopulmonary System

Aging and the Cardiopulmonary System

Electrophysiology of the Heart

The Standard 12 ECG System

ECG Interpretation

Hemodynamic Measurements

Renal Failure and Its Effects on the Cardiopulmonary System

Sleep Physiology and Its Relationship to the Cardiopulmonary System

Exercise and Its Effects on the Cardiopulmonary System

High Altitude and Its Effects on the Cardiopulmonary System

High Pressure Environments and Their Effects on the Cardiopulmonary System

Filters

When breathing room air,what is the P_N₂ in the alveoli?

At sea level,what does the P_N₂ of the atmosphere equal in mmHg ?

At sea level,what would the P_AO2equal if the P_B is 760 mm Hg,the PaCO₂ is 40 mm Hg with F₁O₂ 1.0?

When breathing F_IO₂ 1.0 at seal level,what would the P_N₂ in the alveoli equal?