Question 1

Which are the muscles that control inhalation

Accepted Answer

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

Question 2

Which of these statements does NOT describe the peripheral chemoreceptors

Accepted Answer

A) They are stimulated whenever the arterial PO₂ falls below normal. 
B) They are weakly stimulated by a rise in arterial PCO₂. 
C) They are stimulated by an increase in arterial H⁺, which plays an important role in acid-base balance. 
D) They are located at the bifurcation of the common carotid arteries and in the aortic arch. 
A) They are stimulated whenever the arterial PO₂ falls below normal. 
B) They are weakly stimulated by a rise in arterial PCO₂. 
C) They are stimulated by an increase in arterial H⁺, which plays an important role in acid-base balance. 
D) They are located at the bifurcation of the common carotid arteries and in the aortic arch. A

Question 3

Which one of these circumstances causes intrapleural pressure to exceed airway pressure

Accepted Answer

A) normal quiet breathing 
B) maximal forced expiration 
C) pneumothorax 
D) pleural effusion 
A) normal quiet breathing 
B) maximal forced expiration 
C) pneumothorax 
D) pleural effusion B

Question 4

The ____________________ is the maximum volume of air that can be inspired at the end of a normal, quiet expiration.

Accepted Answer

inspirator

Question 5

Pulmonary surfactant reduces the work of breathing and increases lung stability by increasing alveolar surface tension.

Accepted Answer

A) True 
 B)False

Question 6

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 7

The alveoli are encircled by capillaries.

Accepted Answer

A) True 
 B)False

Question 8

____________________ refers to air flow between adjacent alveoli through the pores of Kohn.

Accepted Answer

Collateral

Question 9

The combination of Hb and CO₂ is known as carbamino haemoglobin.

Accepted Answer

A) True 
 B)False

Question 10

What does pulmonary compliance refer to specifically

Accepted Answer

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

Question 11

Which of the following does NOT hold the lungs against the thoracic wall

Accepted Answer

A) negative intrapleural pressure 
B) negative intrapulmonary pressure 
C) cohesiveness of the pleural fluids 
D) positive intrapulmonary pressure 
A) negative intrapleural pressure 
B) negative intrapulmonary pressure 
C) cohesiveness of the pleural fluids 
D) positive intrapulmonary pressure

Question 12

Without pulmonary surfactant, which one of these actions would happen

Accepted Answer

A) Small alveoli would tend to collapse. 
B) Larger alveoli would tend to empty into smaller alveoli. 
C) All alveoli would become easier to inflate. 
D) The surface tension in the alveoli would become reduced. 
A) Small alveoli would tend to collapse. 
B) Larger alveoli would tend to empty into smaller alveoli. 
C) All alveoli would become easier to inflate. 
D) The surface tension in the alveoli would become reduced.

Question 13

What is the atmospheric PO₂

Accepted Answer

A) approximately 25 mmHg 
B) approximately 120 mmHg 
C) approximately 160 mmHg 
D) approximately 220 mmHg 
A) approximately 25 mmHg 
B) approximately 120 mmHg 
C) approximately 160 mmHg 
D) approximately 220 mmHg

Question 14

Pulmonary ventilation is another name for the mechanical act of ____________________.

Accepted Answer

The answer of Pulmonary ventilation is another name for the...

Question 15

For inspiration to occur, the intra-alveolar pressure must be lower than the atmospheric pressure.

Accepted Answer

A) True 
 B)False

Question 16

If the alveolar PO₂ is 100 mmHg, what will be the PO₂ of blood leaving the pulmonary capillaries in a normal person

Accepted Answer

A) 20 mmHg 
B) 46 mmHg 
C) 100 mmHg 
D) 760 mmHg 
A) 20 mmHg 
B) 46 mmHg 
C) 100 mmHg 
D) 760 mmHg

Question 17

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.)
-respiratory rate × (tidal volume - dead space 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 18

The respiratory quotient is the ratio of ____________________ to ____________________.

Accepted Answer

CO₂ produc

Question 19

Which of the following increases ventilation the most

Accepted Answer

A) a small increase in arterial PCO₂ 
B) a small decrease in arterial PCO₂ 
C) a small increase in arterial PO₂ 
D) a small decrease in arterial PO₂ 
A) a small increase in arterial PCO₂ 
B) a small decrease in arterial PCO₂ 
C) a small increase in arterial PO₂ 
D) a small decrease in arterial PO₂

Question 20

The intrapleural cavity is located inside the lungs.

Accepted Answer

A) True 
 B)False

Which are the muscles that control inhalation

Which of these statements does NOT describe the peripheral chemoreceptors

Which one of these circumstances causes intrapleural pressure to exceed airway pressure

The ____________________ is the maximum volume of air that can be inspired at the end of a normal, quiet expiration.

Pulmonary surfactant reduces the work of breathing and increases lung stability by increasing alveolar surface tension.

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.

The alveoli are encircled by capillaries.

____________________ refers to air flow between adjacent alveoli through the pores of Kohn.

The combination of Hb and CO₂ is known as carbamino haemoglobin.

What does pulmonary compliance refer to specifically

Which of the following does NOT hold the lungs against the thoracic wall

Without pulmonary surfactant, which one of these actions would happen

What is the atmospheric PO₂

Pulmonary ventilation is another name for the mechanical act of ____________________.

For inspiration to occur, the intra-alveolar pressure must be lower than the atmospheric pressure.

If the alveolar PO₂ is 100 mmHg, what will be the PO₂ of blood leaving the pulmonary capillaries in a normal person

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

The respiratory quotient is the ratio of to .

Which of the following increases ventilation the most

The intrapleural cavity is located inside the lungs.

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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Exam 12: The Respiratory System

Which are the muscles that control inhalation

Which of these statements does NOT describe the peripheral chemoreceptors

Which one of these circumstances causes intrapleural pressure to exceed airway pressure

The ____________________ is the maximum volume of air that can be inspired at the end of a normal, quiet expiration.

Pulmonary surfactant reduces the work of breathing and increases lung stability by increasing alveolar surface tension.

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.

The alveoli are encircled by capillaries.

____________________ refers to air flow between adjacent alveoli through the pores of Kohn.

The combination of Hb and CO₂ is known as carbamino haemoglobin.

What does pulmonary compliance refer to specifically

Which of the following does NOT hold the lungs against the thoracic wall

Without pulmonary surfactant, which one of these actions would happen

What is the atmospheric PO₂

Pulmonary ventilation is another name for the mechanical act of ____________________.

For inspiration to occur, the intra-alveolar pressure must be lower than the atmospheric pressure.

If the alveolar PO₂ is 100 mmHg, what will be the PO₂ of blood leaving the pulmonary capillaries in a normal person

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

The respiratory quotient is the ratio of ____________________ to ____________________.

Which of the following increases ventilation the most

The intrapleural cavity is located inside the lungs.

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

The respiratory quotient is the ratio of to .