Question 1

The respiratory system is the only system involved with the exchange of gas between the cells of an organism and the external environment.

Accepted Answer

A) True 
 B)False

Question 2

The partial pressure of a gas in blood depends on the amount that is physically dissolved and not on the total content of the gas present in the blood.

Accepted Answer

A) True 
 B)False

Question 3

A slight decrease in arterial PO₂ below normal is a more potent stimulus toward increasing respiration than is a slight increase in PCO₂ above normal.

Accepted Answer

A) True 
 B)False

Question 4

According to LaPlace's law,the magnitude of the inward-directed collapsing pressure of a spherical bubble is directly proportional to both the surface tension and the radius of the bubble.

Accepted Answer

A) True 
 B)False

Question 5

intrapleural pressure is negative to maintain lung inflation.

Accepted Answer

A) True 
 B)False

Question 6

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):
-carbon monoxide poisoning

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 7

If 20 percentof the air is composed of O₂,what is the partial pressure of oxygen at an altitude of 20,000 feet where atmospheric pressure is 350 mmHg?

Accepted Answer

A)  20 mmHg 
B)  70 mmHg 
C)  152 mmHg 
D)  760 Hg 
A)  20 mmHg 
B)  70 mmHg 
C)  152 mmHg 
D)  760 Hg

Question 8

The VRG consists of ____________________ and ____________________ neurons.

Accepted Answer

-inspirato

Question 9

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):
-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 10

Which statement is NOT true for 2,3-bisphosphoglycerate?

Accepted Answer

A)  It is produced within red blood cells. 
B)  Its production is inhibited by HbO2. 
C)  Its concentration gradually decreases whenever Hb in the arterial blood is chronically undersaturated. 
A)  It is produced within red blood cells. 
B)  Its production is inhibited by HbO2. 
C)  Its concentration gradually decreases whenever Hb in the arterial blood is chronically undersaturated.

Question 11

If the concentration of carbon dioxide at sea level (760 mmHg)is 0.04 of 1.0 percent,the partial pressure of this gas is ____________________ mm of Hg.

Accepted Answer

0.304 of 1

Question 12

A highly compliant lung is easier to stretch than a less compliant one.

Accepted Answer

A) True 
 B)False

Question 13

The work of breathing normally requires about 3 percent of total energy expenditure.In which situation will this decrease NOT occur?

Accepted Answer

A)  when elastic recoil is decreased 
B)  when resistance goes up 
C)  when the partial pressure of oxygen increases in the air 
D)  when ventilation is increased 
A)  when elastic recoil is decreased 
B)  when resistance goes up 
C)  when the partial pressure of oxygen increases in the air 
D)  when ventilation is increased

Question 14

The respiratory centre is located in the cerebral cortex.

Accepted Answer

A) True 
 B)False

Question 15

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):
-volume of air in the lungs at the end of a normal passive 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 
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

The ____________________ pressure is the pressure exerted by the weight of the air in the atmosphere.

Accepted Answer

The answer of The ____________________ pressure is the pressure exerted...

Question 17

The primary respiratory control centre that provides output to the respiratory muscles is located in the ____________________.

Accepted Answer

medulla of

Question 18

Which statement is NOT true for carbonic anhydrase?

Accepted Answer

A)  It is found in the red blood cells. 
B)  It catalyzes the formation of carbonic acid from carbonic dioxide and water. 
C)  It catalyzes the formation of oxyhaemoglobin from oxygen and reduced haemoglobin. 
A)  It is found in the red blood cells. 
B)  It catalyzes the formation of carbonic acid from carbonic dioxide and water. 
C)  It catalyzes the formation of oxyhaemoglobin from oxygen and reduced haemoglobin.

Question 19

The ____________________ serve as the conducting portion of the respiratory system,and the ____________________ are the gas-exchanging portion.

Accepted Answer

respirator

Question 20

Carbonic anhydrase catalyzes the formation of the oxyhaemoglobin.

Accepted Answer

A) True 
 B)False

The respiratory system is the only system involved with the exchange of gas between the cells of an organism and the external environment.

The partial pressure of a gas in blood depends on the amount that is physically dissolved and not on the total content of the gas present in the blood.

A slight decrease in arterial PO₂ below normal is a more potent stimulus toward increasing respiration than is a slight increase in PCO₂ above normal.

According to LaPlace's law,the magnitude of the inward-directed collapsing pressure of a spherical bubble is directly proportional to both the surface tension and the radius of the bubble.

intrapleural pressure is negative to maintain lung inflation.

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): -carbon monoxide poisoning

If 20 percentof the air is composed of O₂,what is the partial pressure of oxygen at an altitude of 20,000 feet where atmospheric pressure is 350 mmHg?

The VRG consists of and neurons.

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): -volume of air in the respiratory airways

Which statement is NOT true for 2,3-bisphosphoglycerate?

If the concentration of carbon dioxide at sea level (760 mmHg)is 0.04 of 1.0 percent,the partial pressure of this gas is ____________________ mm of Hg.

A highly compliant lung is easier to stretch than a less compliant one.

The work of breathing normally requires about 3 percent of total energy expenditure.In which situation will this decrease NOT occur?

The respiratory centre is located in the cerebral cortex.

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): -volume of air in the lungs at the end of a normal passive expiration

The ____________________ pressure is the pressure exerted by the weight of the air in the atmosphere.

The primary respiratory control centre that provides output to the respiratory muscles is located in the ____________________.

Which statement is NOT true for carbonic anhydrase?

The serve as the conducting portion of the respiratory system,and the are the gas-exchanging portion.

Carbonic anhydrase catalyzes the formation of the 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

The respiratory system is the only system involved with the exchange of gas between the cells of an organism and the external environment.

The partial pressure of a gas in blood depends on the amount that is physically dissolved and not on the total content of the gas present in the blood.

A slight decrease in arterial PO₂ below normal is a more potent stimulus toward increasing respiration than is a slight increase in PCO₂ above normal.

According to LaPlace's law,the magnitude of the inward-directed collapsing pressure of a spherical bubble is directly proportional to both the surface tension and the radius of the bubble.

intrapleural pressure is negative to maintain lung inflation.

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): -carbon monoxide poisoning

If 20 percentof the air is composed of O₂,what is the partial pressure of oxygen at an altitude of 20,000 feet where atmospheric pressure is 350 mmHg?

The VRG consists of ____________________ and ____________________ neurons.

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): -volume of air in the respiratory airways

Which statement is NOT true for 2,3-bisphosphoglycerate?

If the concentration of carbon dioxide at sea level (760 mmHg)is 0.04 of 1.0 percent,the partial pressure of this gas is ____________________ mm of Hg.

A highly compliant lung is easier to stretch than a less compliant one.

The work of breathing normally requires about 3 percent of total energy expenditure.In which situation will this decrease NOT occur?

The respiratory centre is located in the cerebral cortex.

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): -volume of air in the lungs at the end of a normal passive expiration

The ____________________ pressure is the pressure exerted by the weight of the air in the atmosphere.

The primary respiratory control centre that provides output to the respiratory muscles is located in the ____________________.

Which statement is NOT true for carbonic anhydrase?

The ____________________ serve as the conducting portion of the respiratory system,and the ____________________ are the gas-exchanging portion.

Carbonic anhydrase catalyzes the formation of the 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

The VRG consists of and neurons.

The serve as the conducting portion of the respiratory system,and the are the gas-exchanging portion.