Question 1

If a person ascended a mountain where the atmospheric pressure was only 500 mmHg, assuming that the air consisted of 21 percent O₂, what would the PO₂ of the air be

Accepted Answer

The answer of If a person ascended a mountain where...

Question 2

Which of these statements does NOT describe the partial pressure of oxygen in the pulmonary veins

Accepted Answer

A) It is about 100 mmHg. 
B) It is equivalent to alveolar partial pressure. 
C) It is the same as pulmonary arteries' partial pressure. 
D) It is highest in pulmonary veins. 
A) It is about 100 mmHg. 
B) It is equivalent to alveolar partial pressure. 
C) It is the same as pulmonary arteries' partial pressure. 
D) It is highest in pulmonary veins.

Question 3

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.)
-cyanide poisoning

Accepted Answer

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

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.)
-vital capacity + residual 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 6

The ____________________ nerve supplies the diaphragm.

Accepted Answer

The answer of The ____________________ nerve supplies the diaphragm....

Question 7

O₂ moves from the alveoli to the blood by active transport.

Accepted Answer

A) True 
 B)False

Question 8

Which of these statements describes residual volume

Accepted Answer

A) It helps prevent lung collapse. 
B) It is the normal volume of air inhaled. 
C) It is the normal volume of air exhaled. 
D) It is the maximum volume of air that can be inspired. 
A) It helps prevent lung collapse. 
B) It is the normal volume of air inhaled. 
C) It is the normal volume of air exhaled. 
D) It is the maximum volume of air that can be inspired.

Question 9

Which type of chronic obstructive pulmonary disease is characterized by a breakdown of alveolar walls and collapse of the smaller airways

Accepted Answer

A) asthma 
B) chronic bronchitis 
C) emphysema 
D) bronchiectasis 
A) asthma 
B) chronic bronchitis 
C) emphysema 
D) bronchiectasis

Question 10

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.)
-congestive heart failure

Accepted Answer

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

Question 11

Alveolar PO₂ is higher following inspiration than following expiration.

Accepted Answer

A) True 
 B)False

Question 12

Where does the 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 13

The abdominal muscles are expiratory muscles.

Accepted Answer

A) True 
 B)False

Question 14

The partial pressure of nitrogen in the atmosphere is greater than the partial pressure of oxygen in the atmosphere.

Accepted Answer

A) True 
 B)False

Question 15

The bronchioles are rigid, nonmuscular airways encircled by a series of cartilaginous rings.

Accepted Answer

A) True 
 B)False

Question 16

The respiratory system provides a route for water and heat elimination.

Accepted Answer

A) True 
 B)False

Question 17

Which one of these factors would decrease the diffusion of a gas across the alveolar/pulmonary capillary membrane

Accepted Answer

A) an increase in the thickness of the membrane 
B) an increase in the surface area of the membrane 
C) an increase in the partial pressure gradient 
D) the gas's smaller molecular size 
A) an increase in the thickness of the membrane 
B) an increase in the surface area of the membrane 
C) an increase in the partial pressure gradient 
D) the gas's smaller molecular size

Question 18

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

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 19

Which of the following does NOT happen during forceful expirations

Accepted Answer

A) The accessory expiratory muscles contract. 
B) The external intercostals contract. 
C) The abdominal muscles contract. 
D) The diaphragm contracts. 
A) The accessory expiratory muscles contract. 
B) The external intercostals contract. 
C) The abdominal muscles contract. 
D) The diaphragm contracts.

Question 20

Which of these statements does NOT apply to haemoglobin

Accepted Answer

A) It plays a critical role in determining the total amount of O₂ that is exchanged because it acts as a storage depot, removing dissolved O₂ and thus keeping the PO₂ low so that net diffusion is allowed to continue. 
B) It combines only with O₂. 
C) It is found in erythrocytes. 
D) It is an iron-bearing, protein molecule. 
A) It plays a critical role in determining the total amount of O₂ that is exchanged because it acts as a storage depot, removing dissolved O₂ and thus keeping the PO₂ low so that net diffusion is allowed to continue. 
B) It combines only with O₂. 
C) It is found in erythrocytes. 
D) It is an iron-bearing, protein molecule.

If a person ascended a mountain where the atmospheric pressure was only 500 mmHg, assuming that the air consisted of 21 percent O₂, what would the PO₂ of the air be

Which of these statements does NOT describe the partial pressure of oxygen in the pulmonary veins

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.) -cyanide poisoning

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

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

The ____________________ nerve supplies the diaphragm.

O₂ moves from the alveoli to the blood by active transport.

Which of these statements describes residual volume

Which type of chronic obstructive pulmonary disease is characterized by a breakdown of alveolar walls and collapse of the smaller airways

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.) -congestive heart failure

Alveolar PO₂ is higher following inspiration than following expiration.

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

The abdominal muscles are expiratory muscles.

The partial pressure of nitrogen in the atmosphere is greater than the partial pressure of oxygen in the atmosphere.

The bronchioles are rigid, nonmuscular airways encircled by a series of cartilaginous rings.

The respiratory system provides a route for water and heat elimination.

Which one of these factors would decrease the diffusion of a gas across the alveolar/pulmonary capillary membrane

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

Which of the following does NOT happen during forceful expirations

Which of these statements does NOT apply to haemoglobin

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Exam 12: The Respiratory System

If a person ascended a mountain where the atmospheric pressure was only 500 mmHg, assuming that the air consisted of 21 percent O₂, what would the PO₂ of the air be

Which of these statements does NOT describe the partial pressure of oxygen in the pulmonary veins

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.) -cyanide poisoning

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

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

The ____________________ nerve supplies the diaphragm.

O₂ moves from the alveoli to the blood by active transport.

Which of these statements describes residual volume

Which type of chronic obstructive pulmonary disease is characterized by a breakdown of alveolar walls and collapse of the smaller airways

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.) -congestive heart failure

Alveolar PO₂ is higher following inspiration than following expiration.

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

The abdominal muscles are expiratory muscles.

The partial pressure of nitrogen in the atmosphere is greater than the partial pressure of oxygen in the atmosphere.

The bronchioles are rigid, nonmuscular airways encircled by a series of cartilaginous rings.

The respiratory system provides a route for water and heat elimination.

Which one of these factors would decrease the diffusion of a gas across the alveolar/pulmonary capillary membrane

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

Which of the following does NOT happen during forceful expirations

Which of these statements does NOT apply to haemoglobin

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

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