Question 1

The DRG consists mostly of ____________________ neurons.

Accepted Answer

The answer of The DRG consists mostly of ____________________ neurons....

Question 2

What does NOT bring about increased airway resistance?

Accepted Answer

A)  Asthma 
B)  epinephrine and norepinephrine 
C)  slow-reactive substance of anaphylaxis 
D)  Emphysema

Question 3

During hyperventilation,arterial PCO₂ levels decrease because CO₂ is blown off more rapidly than it is being produced in the tissues.

Accepted Answer

A) True 
 B)False

Question 4

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):
-haemoglobin deficiency

Accepted Answer

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

Question 5

What does compliance refer to specifically?

Accepted Answer

A)  effort required to stretch the lungs 
B)  elasticity of the lung tissue 
C)  energy requirements for an inspiration 
D)  surface area of the alveoli

Question 6

Both the respiratory system and the circulatory system are involved in the process of respiration.

Accepted Answer

A) True 
 B)False

Question 7

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):
-stimulates the peripheral chemoreceptors and is important in the regulation of acid-base balance

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

Question 8

In which way is carbon dioxide NOT transported in the blood?

Accepted Answer

A)  bicarbonate ion 
B)  carbonic acid 
C)  directly dissolved 
D)  as a gas

Question 9

In the plateau region of the Hb-O₂ curve,a large decrease in PO₂ results in a small decrease in Hb saturation,whereas in the steep portion of the curve,a small decrease in PO₂ results in a large decrease in percent Hb saturation.

Accepted Answer

A) True 
 B)False

Question 10

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 depresses the central 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

Question 11

Indicate the effect the following changes would have on the rate of gas transfer by using the answer code (options may be used more than once or not at all):
-the effect of increased metabolism of a cell on O₂ and CO₂ exchange between the cell and blood

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.

Question 12

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 minimum volume of air remaining in the lungs after maximal expiration

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

Question 13

Alveolar PO₂ is higher following inspiration than following expiration.

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

Which statement is NOT true of the partial pressure of oxygen in the pulmonary veins?

Accepted Answer

A)  is about 40 mmHg. 
B)  is equivalent to alveolar partial pressure. 
C)  is the same as pulmonary arteries' partial pressure.

Question 16

The volume occupied by the conducting airways is known as the ____________________.

Accepted Answer

The answer of The volume occupied by the conducting airways...

Question 17

The subjective sensation of not getting enough air is known as ____________________.

Accepted Answer

The answer of The subjective sensation of not getting enough...

Question 18

In the absence of pulmonary surfactant,smaller alveoli display a larger inward-directed pressure than do larger alveoli.

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

During external respiration,the PO₂ is greater in the alveoli than in the blood of the pulmonary capillaries.

Accepted Answer

A) True 
 B)False

Exam 11: The Respiratory System

The DRG consists mostly of ____________________ neurons.

What does NOT bring about increased airway resistance?

During hyperventilation,arterial PCO₂ levels decrease because CO₂ is blown off more rapidly than it is being produced in the tissues.

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) : -haemoglobin deficiency

What does compliance refer to specifically?

Both the respiratory system and the circulatory system are involved in the process of respiration.

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) : -stimulates the peripheral chemoreceptors and is important in the regulation of acid-base balance

In which way is carbon dioxide NOT transported in the blood?

In the plateau region of the Hb-O₂ curve,a large decrease in PO₂ results in a small decrease in Hb saturation,whereas in the steep portion of the curve,a small decrease in PO₂ results in a large decrease in percent Hb saturation.

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 depresses the central chemoreceptors

Indicate the effect the following changes would have on the rate of gas transfer by using the answer code (options may be used more than once or not at all) : -the effect of increased metabolism of a cell on O₂ and CO₂ exchange between the cell and blood

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 minimum volume of air remaining in the lungs after maximal expiration

Alveolar PO₂ is higher following inspiration than following expiration.

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

Which statement is NOT true of the partial pressure of oxygen in the pulmonary veins?

The volume occupied by the conducting airways is known as the ____________________.

The subjective sensation of not getting enough air is known as ____________________.

In the absence of pulmonary surfactant,smaller alveoli display a larger inward-directed pressure than do larger alveoli.

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

During external respiration,the PO₂ is greater in the alveoli than in the blood of the pulmonary capillaries.