Question 1

If there is a deficient supply of pulmonary surfactant, the lungs become more compliant.

Accepted Answer

A) True 
 B)False

Question 2

Which activity below is NOT a respiratory event

Accepted Answer

A) Carbon dioxide is exchanged in the alveoli. 
B) Gas exchange occurs between tissues and the blood. 
C) Cells produce nitrogen by their metabolism. 
D) Oxygen is exchanged in the alveoli. 
A) Carbon dioxide is exchanged in the alveoli. 
B) Gas exchange occurs between tissues and the blood. 
C) Cells produce nitrogen by their metabolism. 
D) Oxygen is exchanged in the alveoli.

Question 3

The most profound changes in thoracic volume can be accomplished by contraction of the ____________________.

Accepted Answer

The answer of The most profound changes in thoracic volume...

Question 4

When the inspiratory neurons stop firing, the expiratory muscles contract.

Accepted Answer

A) True 
 B)False

Question 5

____________________ refers to air in the pleural cavity.

Accepted Answer

The answer of ____________________ refers to air in the pleural...

Question 6

All respiratory airways are held open by cartilaginous rings.

Accepted Answer

A) True 
 B)False

Question 7

Which of these factors would result in bronchoconstriction

Accepted Answer

A) sympathetic stimulation 
B) increased carbon dioxide concentration 
C) epinephrine secretion 
D) parasympathetic stimulation 
A) sympathetic stimulation 
B) increased carbon dioxide concentration 
C) epinephrine secretion 
D) parasympathetic stimulation

Question 8

Air flow through the smaller bronchioles can be adjusted by varying the contractile activity of the smooth muscle within their walls.

Accepted Answer

A) True 
 B)False

Question 9

As the resistance of the air passages increases, the airflow through them ____________________ if the pressure gradient remains constant.

Accepted Answer

The answer of As the resistance of the air passages...

Question 10

Which of the following does NOT contribute to keeping the alveoli open

Accepted Answer

A) alveolar surface tension 
B) transmural pressure gradient 
C) pulmonary surfactant 
D) alveolar interdependence 
A) alveolar surface tension 
B) transmural pressure gradient 
C) pulmonary surfactant 
D) alveolar interdependence

Question 11

____________________ is inflammation of the pleural sac.

Accepted Answer

The answer of ____________________ is inflammation of the pleural sac....

Question 12

Match the effects on the rate of gas transfer, labelled a. through c., with the changes listed. (Options may be used more than once or not at all.)
-the effect of pulmonary fibrosis on O₂ and CO₂ exchange within the lungs

Accepted Answer

A) This change would increase the rate of gas transfer. 
B) This change would decrease the rate of gas transfer. 
C) This change would have no effect on the rate of gas transfer. 
A) This change would increase the rate of gas transfer. 
B) This change would decrease the rate of gas transfer. 
C) This change would have no effect on the rate of gas transfer.

Question 13

Match the effects on the rate of gas transfer, labelled a. through c., with the changes listed. (Options may be used more than once or not at all.)
-the effect of reduced systemic venous PO₂ on O₂ exchange within the lungs

Accepted Answer

A) This change would increase the rate of gas transfer. 
B) This change would decrease the rate of gas transfer. 
C) This change would have no effect on the rate of gas transfer. 
A) This change would increase the rate of gas transfer. 
B) This change would decrease the rate of gas transfer. 
C) This change would have no effect on the rate of gas transfer.

Question 14

Gases are transported during external respiration by active transport mechanisms.

Accepted Answer

A) True 
 B)False

Question 15

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.)
-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 16

Where are the stretch receptors for the Breuer-Hering reflex located

Accepted Answer

A) midbrain 
B) elastic tissue of the lungs 
C) medulla 
D) smooth muscle layer of the airways 
A) midbrain 
B) elastic tissue of the lungs 
C) medulla 
D) smooth muscle layer of the airways

Question 17

Pulmonary surfactant decreases surface tension to a greater degree in large alveoli than in small alveoli.

Accepted Answer

A) True 
 B)False

Question 18

What is the term for the minimum volume of air that remains in the lungs after a maximal expiration

Accepted Answer

A) tidal volume 
B) functional residual capacity 
C) residual volume 
D) vital capacity 
A) tidal volume 
B) functional residual capacity 
C) residual volume 
D) vital capacity

Question 19

The exchange of O₂ and CO₂ between the external environment and tissue cells is known as ____________________.

Accepted Answer

external r

Question 20

The ____________________ effect refers to the increased affinity of Hb for CO₂ and H⁺ after O₂ unloading.

Accepted Answer

The answer of The ____________________ effect refers to the increased...

If there is a deficient supply of pulmonary surfactant, the lungs become more compliant.

Which activity below is NOT a respiratory event

The most profound changes in thoracic volume can be accomplished by contraction of the ____________________.

When the inspiratory neurons stop firing, the expiratory muscles contract.

____________________ refers to air in the pleural cavity.

All respiratory airways are held open by cartilaginous rings.

Which of these factors would result in bronchoconstriction

Air flow through the smaller bronchioles can be adjusted by varying the contractile activity of the smooth muscle within their walls.

As the resistance of the air passages increases, the airflow through them ____________________ if the pressure gradient remains constant.

Which of the following does NOT contribute to keeping the alveoli open

____________________ is inflammation of the pleural sac.

Match the effects on the rate of gas transfer, labelled a. through c., with the changes listed. (Options may be used more than once or not at all.) -the effect of pulmonary fibrosis on O₂ and CO₂ exchange within the lungs

Match the effects on the rate of gas transfer, labelled a. through c., with the changes listed. (Options may be used more than once or not at all.) -the effect of reduced systemic venous PO₂ on O₂ exchange within the lungs

Gases are transported during external respiration by active transport mechanisms.

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.) -maximum volume of air that can be moved in and out during a single breath

Where are the stretch receptors for the Breuer-Hering reflex located

Pulmonary surfactant decreases surface tension to a greater degree in large alveoli than in small alveoli.

What is the term for the minimum volume of air that remains in the lungs after a maximal expiration

The exchange of O₂ and CO₂ between the external environment and tissue cells is known as ____________________.

The ____________________ effect refers to the increased affinity of Hb for CO₂ and H⁺ after O₂ unloading.

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

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Fluid and Acidbase Balance

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Exam 12: The Respiratory System

If there is a deficient supply of pulmonary surfactant, the lungs become more compliant.

Which activity below is NOT a respiratory event

The most profound changes in thoracic volume can be accomplished by contraction of the ____________________.

When the inspiratory neurons stop firing, the expiratory muscles contract.

____________________ refers to air in the pleural cavity.

All respiratory airways are held open by cartilaginous rings.

Which of these factors would result in bronchoconstriction

Air flow through the smaller bronchioles can be adjusted by varying the contractile activity of the smooth muscle within their walls.

As the resistance of the air passages increases, the airflow through them ____________________ if the pressure gradient remains constant.

Which of the following does NOT contribute to keeping the alveoli open

____________________ is inflammation of the pleural sac.

Match the effects on the rate of gas transfer, labelled a. through c., with the changes listed. (Options may be used more than once or not at all.) -the effect of pulmonary fibrosis on O₂ and CO₂ exchange within the lungs

Match the effects on the rate of gas transfer, labelled a. through c., with the changes listed. (Options may be used more than once or not at all.) -the effect of reduced systemic venous PO₂ on O₂ exchange within the lungs

Gases are transported during external respiration by active transport mechanisms.

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.) -maximum volume of air that can be moved in and out during a single breath

Where are the stretch receptors for the Breuer-Hering reflex located

Pulmonary surfactant decreases surface tension to a greater degree in large alveoli than in small alveoli.

What is the term for the minimum volume of air that remains in the lungs after a maximal expiration

The exchange of O₂ and CO₂ between the external environment and tissue cells is known as ____________________.

The ____________________ effect refers to the increased affinity of Hb for CO₂ and H⁺ after O₂ unloading.

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters