Question 1

How are respiratory events regulated

Accepted Answer

The answer of How are respiratory events regulated...

Question 2

Pores of Kohn permit air flow between adjacent alveoli, a process known as collateral ventilation.

Accepted Answer

A) True 
 B)False

Question 3

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

Approximately what percentage of oxygen is transported in the blood dissolved in free form

Accepted Answer

A) 1.5 percent 
B) 15 percent 
C) 60 percent 
D) 72 percent 
A) 1.5 percent 
B) 15 percent 
C) 60 percent 
D) 72 percent

Question 5

Match the physiological factors, labelled a. through e., with the descriptions. (Options may be used more than once or not at all.)
-stimulates the peripheral 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 
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 6

____________________ refers to a ventilation rate that exceeds the metabolic needs of the body.

Accepted Answer

The answer of ____________________ refers to a ventilation rate that...

Question 7

If 20 percent of the air is composed of O₂, what is the partial pressure of oxygen at sea level, where atmospheric pressure is 760 mmHg

Accepted Answer

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

Question 8

In the breathing cycle, the atmospheric pressure normally does not change.

Accepted Answer

A) True 
 B)False

Question 9

The skeletal muscles for breathing are located in the walls of the lungs.

Accepted Answer

A) True 
 B)False

Question 10

A(n) ____________________ pressure across the chest wall influences lung movements.

Accepted Answer

The answer of A(n) ____________________ pressure across the chest wall...

Question 11

If a person is breathing rapidly, it is safe to assume that he or she is getting adequate ventilation.

Accepted Answer

A) True 
 B)False

Question 12

If 20 percent of the air is composed of O₂, what is the partial pressure of oxygen at an altitude of 20000 feet, where atmospheric pressure is 350 mmHg

Accepted Answer

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

Question 13

Which of these statements does NOT describe carbonic anhydrase

Accepted Answer

A) It is found in 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. 
D) It accelerates the reaction of carbon dioxide and water. 
A) It is found in 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. 
D) It accelerates the reaction of carbon dioxide and water.

Question 14

Which of the following does NOT make breathing more difficult

Accepted Answer

A) increased pulmonary compliance 
B) increased airway resistance 
C) decreased elastic recoil 
D) decreased surfactant production 
A) increased pulmonary compliance 
B) increased airway resistance 
C) decreased elastic recoil 
D) decreased surfactant production

Question 15

In the plateau region of the O₂-Hb 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 16

Administering O₂ to patients with severe chronic lung disease will not depress their drive to breathe.

Accepted Answer

A) True 
 B)False

Question 17

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 18

The DRG consists mostly of ____________________ neurons.

Accepted Answer

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

Question 19

A drop in the oxygen levels in arterial blood ____________________ the central chemoreceptors.

Accepted Answer

The answer of A drop in the oxygen levels in...

Question 20

In which of these ways is carbon dioxide NOT transported in the blood

Accepted Answer

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

How are respiratory events regulated

Pores of Kohn permit air flow between adjacent alveoli, a process known as collateral ventilation.

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

Approximately what percentage of oxygen is transported in the blood dissolved in free form

Match the physiological factors, labelled a. through e., with the descriptions. (Options may be used more than once or not at all.) -stimulates the peripheral chemoreceptors

____________________ refers to a ventilation rate that exceeds the metabolic needs of the body.

If 20 percent of the air is composed of O₂, what is the partial pressure of oxygen at sea level, where atmospheric pressure is 760 mmHg

In the breathing cycle, the atmospheric pressure normally does not change.

The skeletal muscles for breathing are located in the walls of the lungs.

A(n) ____________________ pressure across the chest wall influences lung movements.

If a person is breathing rapidly, it is safe to assume that he or she is getting adequate ventilation.

If 20 percent of the air is composed of O₂, what is the partial pressure of oxygen at an altitude of 20000 feet, where atmospheric pressure is 350 mmHg

Which of these statements does NOT describe carbonic anhydrase

Which of the following does NOT make breathing more difficult

In the plateau region of the O₂-Hb 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.

Administering O₂ to patients with severe chronic lung disease will not depress their drive to breathe.

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

The DRG consists mostly of ____________________ neurons.

A drop in the oxygen levels in arterial blood ____________________ the central chemoreceptors.

In which of these ways is carbon dioxide NOT transported in the blood

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

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The Urinary System

Fluid and Acidbase Balance

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Exam 12: The Respiratory System

How are respiratory events regulated

Pores of Kohn permit air flow between adjacent alveoli, a process known as collateral ventilation.

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

Approximately what percentage of oxygen is transported in the blood dissolved in free form

Match the physiological factors, labelled a. through e., with the descriptions. (Options may be used more than once or not at all.) -stimulates the peripheral chemoreceptors

____________________ refers to a ventilation rate that exceeds the metabolic needs of the body.

If 20 percent of the air is composed of O₂, what is the partial pressure of oxygen at sea level, where atmospheric pressure is 760 mmHg

In the breathing cycle, the atmospheric pressure normally does not change.

The skeletal muscles for breathing are located in the walls of the lungs.

A(n) ____________________ pressure across the chest wall influences lung movements.

If a person is breathing rapidly, it is safe to assume that he or she is getting adequate ventilation.

If 20 percent of the air is composed of O₂, what is the partial pressure of oxygen at an altitude of 20000 feet, where atmospheric pressure is 350 mmHg

Which of these statements does NOT describe carbonic anhydrase

Which of the following does NOT make breathing more difficult

In the plateau region of the O₂-Hb 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.

Administering O₂ to patients with severe chronic lung disease will not depress their drive to breathe.

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

The DRG consists mostly of ____________________ neurons.

A drop in the oxygen levels in arterial blood ____________________ the central chemoreceptors.

In which of these ways is carbon dioxide NOT transported in the blood

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