Question 1

What is NOT a function of the respiratory system?

Accepted Answer

A)  transporting O2 to the tissues 
B)  contributing to maintenance of normal acid-base balance. 
C)  providing a route for heat and water elimination. 
D)  enabling speech, singing, and other vocalization. 
A)  transporting O2 to the tissues 
B)  contributing to maintenance of normal acid-base balance. 
C)  providing a route for heat and water elimination. 
D)  enabling speech, singing, and other vocalization.

Question 2

The intrapleural cavity is located inside the lungs.

Accepted Answer

A) True 
 B)False

Question 3

Systemic arterial PO₂ is greater than tissue PO₂.

Accepted Answer

A) True 
 B)False

Question 4

In addition to providing for gas exchange,what are the other functions of the respiratory system?

Accepted Answer

The answer of In addition to providing for gas exchange,what...

Question 5

Which statement is correct for expiratory neurons?

Accepted Answer

A)  They are found in both the DRG and VRG. 
B)  They send impulses to the expiratory muscles during normal quiet breathing. 
C)  They are stimulated by the pneumotaxic centre. 
D)  They are stimulated by the inspiratory neurons and in turn inhibit the inspiratory neurons. 
A)  They are found in both the DRG and VRG. 
B)  They send impulses to the expiratory muscles during normal quiet breathing. 
C)  They are stimulated by the pneumotaxic centre. 
D)  They are stimulated by the inspiratory neurons and in turn inhibit the inspiratory neurons.

Question 6

Pulmonary surfactant is secreted by Type II alveolar cells.

Accepted Answer

A) True 
 B)False

Question 7

Exhaled air passes from the larynx through the trachea.

Accepted Answer

A) True 
 B)False

Question 8

What does not hold the lungs against the thoracic wall?

Accepted Answer

A)  the negative intrapleural pressure 
B)  the negative intrapulmonary pressure 
C)  cohesiveness of the pleural fluids 
A)  the negative intrapleural pressure 
B)  the negative intrapulmonary pressure 
C)  cohesiveness of the pleural fluids

Question 9

What brings on normal expirations?

Accepted Answer

A)  contraction of the external intercostals 
B)  contraction of the internal intercostals 
C)  contraction of the diaphragm 
D)  elastic recoil of stretched lung tissues and relaxation of inspiratory muscles 
A)  contraction of the external intercostals 
B)  contraction of the internal intercostals 
C)  contraction of the diaphragm 
D)  elastic recoil of stretched lung tissues and relaxation of inspiratory muscles

Question 10

For what does haemoglobin have the greatest affinity?

Accepted Answer

A)  carbon dioxide 
B)  oxygen 
C)  carbon monoxide. 
D)  nitrogen 
A)  carbon dioxide 
B)  oxygen 
C)  carbon monoxide. 
D)  nitrogen

Question 11

Which skeletal muscle is innervated by the phrenic nerve?

Accepted Answer

A)  rectus abdominus 
B)  Diaphragm 
C)  external intercostal 
D)  Sternocleodomastoid 
A)  rectus abdominus 
B)  Diaphragm 
C)  external intercostal 
D)  Sternocleodomastoid

Question 12

Approximately what percentage of oxygen is transported in the blood dissolved in free form?

Accepted Answer

A)  1.5 
B)  15 
C)  60 
D)  72 
A)  1.5 
B)  15 
C)  60 
D)  72

Question 13

Indicate which chemical factor is responsible for the effect described by using the answer code (options may be used more than once or not at all):
-weakly stimulates the peripheral chemoreceptors

Accepted Answer

A) arterial PO2 between 60 to 100 mmHg 
B) arterial PO2 less than 60 mmHg 
C) arterial PCO2 increased above normal 
D) brain ECF H+ increased above normal 
E) arterial H+ increased above normal 
A) arterial PO2 between 60 to 100 mmHg 
B) arterial PO2 less than 60 mmHg 
C) arterial PCO2 increased above normal 
D) brain ECF H+ increased above normal 
E) arterial H+ increased above normal

Question 14

Indicate which type of hypoxia would be present in each of the circumstances listed below by using the answer code (options may be used more than once or not at all):
-emphysema

Accepted Answer

A) anemic hypoxia 
B) circulatory hypoxia 
C) histotoxic hypoxia 
D) hypoxic hypoxia 
A) anemic hypoxia 
B) circulatory hypoxia 
C) histotoxic hypoxia 
D) hypoxic hypoxia

Question 15

The peripheral chemoreceptors are not activated during carbon monoxide poisoning despite the fact that the total O₂ content in the blood can become lethally low.

Accepted Answer

A) True 
 B)False

Question 16

What is the primary regulator of the magnitude of ventilation in normal circumstances?

Accepted Answer

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

Question 17

A(n)____________________ pressure across the chest wall influences lung movements.

Accepted Answer

The answer of A(n)____________________ pressure across the chest wall influences...

Question 18

The respiratory airways filter,warm,and humidify incoming air.

Accepted Answer

A) True 
 B)False

Question 19

MATCHING
Indicate which lung volume or capacity is being described in the column below by using the answer code (options may be used more than once or not at all):
-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 20

Increased acidity at the tissue cells stimulates increased dissociation of oxyhaemoglobin.

Accepted Answer

A) True 
 B)False

What is NOT a function of the respiratory system?

The intrapleural cavity is located inside the lungs.

Systemic arterial PO₂ is greater than tissue PO₂.

In addition to providing for gas exchange,what are the other functions of the respiratory system?

Which statement is correct for expiratory neurons?

Pulmonary surfactant is secreted by Type II alveolar cells.

Exhaled air passes from the larynx through the trachea.

What does not hold the lungs against the thoracic wall?

What brings on normal expirations?

For what does haemoglobin have the greatest affinity?

Which skeletal muscle is innervated by the phrenic nerve?

Approximately what percentage of oxygen is transported in the blood dissolved in free form?

Indicate which chemical factor is responsible for the effect described by using the answer code (options may be used more than once or not at all): -weakly stimulates the peripheral chemoreceptors

Indicate which type of hypoxia would be present in each of the circumstances listed below by using the answer code (options may be used more than once or not at all): -emphysema

The peripheral chemoreceptors are not activated during carbon monoxide poisoning despite the fact that the total O₂ content in the blood can become lethally low.

What is the primary regulator of the magnitude of ventilation in normal circumstances?

A(n)____________________ pressure across the chest wall influences lung movements.

The respiratory airways filter,warm,and humidify incoming air.

MATCHING Indicate which lung volume or capacity is being described in the column below by using the answer code (options may be used more than once or not at all): -the extra volume of air that can be actively expired by contraction of expiratory muscles beyond that normally expired

Increased acidity at the tissue cells stimulates increased dissociation of oxyhaemoglobin.

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System

Principals of Endocrinology; The Central Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Urinary System

Fluid and Acid Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine Glands

The Reproductive System

Filters

Exam 11: The Respiratory System

What is NOT a function of the respiratory system?

The intrapleural cavity is located inside the lungs.

Systemic arterial PO₂ is greater than tissue PO₂.

In addition to providing for gas exchange,what are the other functions of the respiratory system?

Which statement is correct for expiratory neurons?

Pulmonary surfactant is secreted by Type II alveolar cells.

Exhaled air passes from the larynx through the trachea.

What does not hold the lungs against the thoracic wall?

What brings on normal expirations?

For what does haemoglobin have the greatest affinity?

Which skeletal muscle is innervated by the phrenic nerve?

Approximately what percentage of oxygen is transported in the blood dissolved in free form?

Indicate which chemical factor is responsible for the effect described by using the answer code (options may be used more than once or not at all): -weakly stimulates the peripheral chemoreceptors

Indicate which type of hypoxia would be present in each of the circumstances listed below by using the answer code (options may be used more than once or not at all): -emphysema

The peripheral chemoreceptors are not activated during carbon monoxide poisoning despite the fact that the total O₂ content in the blood can become lethally low.

What is the primary regulator of the magnitude of ventilation in normal circumstances?

A(n)____________________ pressure across the chest wall influences lung movements.

The respiratory airways filter,warm,and humidify incoming air.

MATCHING Indicate which lung volume or capacity is being described in the column below by using the answer code (options may be used more than once or not at all): -the extra volume of air that can be actively expired by contraction of expiratory muscles beyond that normally expired

Increased acidity at the tissue cells stimulates increased dissociation of oxyhaemoglobin.

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System

Principals of Endocrinology; The Central Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Urinary System

Fluid and Acid Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine Glands

The Reproductive System

Filters