Question 1

What is the last step that produces an inspiration?

Accepted Answer

A)  The atmospheric pressure becomes lower than the intrapleural pressure. 
B)  The diaphragm contracts. 
C)  The intercostal muscles contract. 
D)  The intra-alveolar pressure becomes lower than the atmospheric pressure. 
A)  The atmospheric pressure becomes lower than the intrapleural pressure. 
B)  The diaphragm contracts. 
C)  The intercostal muscles contract. 
D)  The intra-alveolar pressure becomes lower than the atmospheric pressure.

Question 2

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):
-breaths/minute

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 3

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):
-inspiratory reserve volume + tidal volume + expiratory reserve volume

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 4

The most important factor controlling respiration is the PO₂ of arterial blood.

Accepted Answer

A) True 
 B)False

Question 5

A person has a tidal volume of 400 mL,a respiratory rate of 14,and an anatomic dead space volume of 150 mL.What is his alveolar ventilation rate?

Accepted Answer

A)  3,500 mL/minute 
B)  3,920 mL/minute 
C)  4,260 mL/minute 
D)  5,600 mL/minute 
A)  3,500 mL/minute 
B)  3,920 mL/minute 
C)  4,260 mL/minute 
D)  5,600 mL/minute

Question 6

Intrapleural pressure is usually less than atmospheric pressure.

Accepted Answer

A) True 
 B)False

Question 7

What are the muscles for inhalation?

Accepted Answer

A)  diaphragm and internal intercostal muscles 
B)  diaphragm and external intercostal muscles 
C)  diaphragm and abdominal muscles 
D)  internal and external intercostal muscles 
A)  diaphragm and internal intercostal muscles 
B)  diaphragm and external intercostal muscles 
C)  diaphragm and abdominal muscles 
D)  internal and external intercostal muscles

Question 8

Receptors in the CNS that detect changes in arterial PCO₂ are actually sensitive to the H⁺ concentration of the brain extracellular fluid.

Accepted Answer

A) True 
 B)False

Question 9

Where does pacemaker activity that establishes the rhythmicity of breathing reside?

Accepted Answer

A)  lung tissue 
B)  respiratory muscles 
C)  dorsal respiratory group 
D)  phrenic nerve 
A)  lung tissue 
B)  respiratory muscles 
C)  dorsal respiratory group 
D)  phrenic nerve

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

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):
-directly stimulates the central chemoreceptors and represents the dominant control of ventilation

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 12

A molecule of nitrogen exerts more pressure than a molecule of oxygen because nitrogen is a larger molecule.

Accepted Answer

A) True 
 B)False

Question 13

The most important factor that determines the extent to which haemoglobin is saturated with oxygen is the blood PO₂.

Accepted Answer

A) True 
 B)False

Question 14

The maximum volume of air that can be moved in and out of the lungs in a single breath is known as the ____________________.

Accepted Answer

The answer of The maximum volume of air that can...

Question 15

Inspiration is always an active process.

Accepted Answer

A) True 
 B)False

Question 16

Gases are transported during external respiration by active transport mechanisms.

Accepted Answer

A) True 
 B)False

Question 17

Newborn respiratory distress syndrome is caused by an excess of pulmonary surfactant.

Accepted Answer

A) True 
 B)False

Question 18

What factors influence the amount of gas exchange occurring at the respiratory membrane?

Accepted Answer

The answer of What factors influence the amount of gas...

Question 19

Which statement concerning haemoglobin is INCORRECT?

Accepted Answer

A)  The presence of haemoglobin keeps the blood PO2 low and favours O2 movement into the blood despite a very large transfer of O2 until haemoglobin is completely saturated. 
B)  Haemoglobin can combine with O2, CO2, H+, and CO. 
C)  Haemoglobin unloads less O2 in the presence of increased tissue acidity. 
A)  The presence of haemoglobin keeps the blood PO2 low and favours O2 movement into the blood despite a very large transfer of O2 until haemoglobin is completely saturated. 
B)  Haemoglobin can combine with O2, CO2, H+, and CO. 
C)  Haemoglobin unloads less O2 in the presence of increased tissue acidity.

Question 20

Which statement is correct for Type I alveolar cells?

Accepted Answer

A)  They form the wall of the alveoli. 
B)  They secrete pulmonary surfactant. 
C)  They contract during expiration to force air out of the alveoli. 
D)  They are responsible for surface tension 
A)  They form the wall of the alveoli. 
B)  They secrete pulmonary surfactant. 
C)  They contract during expiration to force air out of the alveoli. 
D)  They are responsible for surface tension

What is the last step that produces an inspiration?

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): -breaths/minute

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): -inspiratory reserve volume + tidal volume + expiratory reserve volume

The most important factor controlling respiration is the PO₂ of arterial blood.

A person has a tidal volume of 400 mL,a respiratory rate of 14,and an anatomic dead space volume of 150 mL.What is his alveolar ventilation rate?

Intrapleural pressure is usually less than atmospheric pressure.

What are the muscles for inhalation?

Receptors in the CNS that detect changes in arterial PCO₂ are actually sensitive to the H⁺ concentration of the brain extracellular fluid.

Where does pacemaker activity that establishes the rhythmicity of breathing reside?

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

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): -directly stimulates the central chemoreceptors and represents the dominant control of ventilation

A molecule of nitrogen exerts more pressure than a molecule of oxygen because nitrogen is a larger molecule.

The most important factor that determines the extent to which haemoglobin is saturated with oxygen is the blood PO₂.

The maximum volume of air that can be moved in and out of the lungs in a single breath is known as the ____________________.

Inspiration is always an active process.

Gases are transported during external respiration by active transport mechanisms.

Newborn respiratory distress syndrome is caused by an excess of pulmonary surfactant.

What factors influence the amount of gas exchange occurring at the respiratory membrane?

Which statement concerning haemoglobin is INCORRECT?

Which statement is correct for Type I alveolar cells?

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Exam 11: The Respiratory System

What is the last step that produces an inspiration?

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): -breaths/minute

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): -inspiratory reserve volume + tidal volume + expiratory reserve volume

The most important factor controlling respiration is the PO₂ of arterial blood.

A person has a tidal volume of 400 mL,a respiratory rate of 14,and an anatomic dead space volume of 150 mL.What is his alveolar ventilation rate?

Intrapleural pressure is usually less than atmospheric pressure.

What are the muscles for inhalation?

Receptors in the CNS that detect changes in arterial PCO₂ are actually sensitive to the H⁺ concentration of the brain extracellular fluid.

Where does pacemaker activity that establishes the rhythmicity of breathing reside?

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

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): -directly stimulates the central chemoreceptors and represents the dominant control of ventilation

A molecule of nitrogen exerts more pressure than a molecule of oxygen because nitrogen is a larger molecule.

The most important factor that determines the extent to which haemoglobin is saturated with oxygen is the blood PO₂.

The maximum volume of air that can be moved in and out of the lungs in a single breath is known as the ____________________.

Inspiration is always an active process.

Gases are transported during external respiration by active transport mechanisms.

Newborn respiratory distress syndrome is caused by an excess of pulmonary surfactant.

What factors influence the amount of gas exchange occurring at the respiratory membrane?

Which statement concerning haemoglobin is INCORRECT?

Which statement is correct for Type I alveolar cells?

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