Question 1

Carbonic anhydrase catalyzes the formation of the oxyhaemoglobin.

Accepted Answer

A) True 
 B)False

Question 2

Match the physiological factors, labelled a. through e., with the descriptions. (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 
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 3

Intrapleural pressure is usually less than atmospheric pressure.

Accepted Answer

A) True 
 B)False

Question 4

Systemic arterial PO₂ is greater than tissue PO₂.

Accepted Answer

A) True 
 B)False

Question 5

What is the primary regulator of the magnitude of ventilation in normal circumstances

Accepted Answer

A) the H⁺ concentration of the brain extracellular fluid, which is monitored by central chemoreceptors 
B) the PO₂ of the arterial blood, which is monitored by central chemoreceptors 
C) the PO₂ of the arterial blood, which is monitored by peripheral chemoreceptors 
D) the PCO₂ of the arterial blood, which is monitored by central chemoreceptors 
A) the H⁺ concentration of the brain extracellular fluid, which is monitored by central chemoreceptors 
B) the PO₂ of the arterial blood, which is monitored by central chemoreceptors 
C) the PO₂ of the arterial blood, which is monitored by peripheral chemoreceptors 
D) the PCO₂ of the arterial blood, which is monitored by central chemoreceptors

Question 6

Match the physiological factors, labelled a. through e., with the descriptions. (Options may be used more than once or not at all.)
-directly stimulates 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 
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 7

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.)
-extra volume of air that can be actively expired by contraction of expiratory muscles beyond that normally expired

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 8

Which one of these situations occurs if the oxygen-haemoglobin dissociation curve is shifted to the right

Accepted Answer

A) Partial pressure of oxygen is increased. 
B) pH is decreased. 
C) Temperature is decreased. 
D) Partial pressure of carbon dioxide is decreased. 
A) Partial pressure of oxygen is increased. 
B) pH is decreased. 
C) Temperature is decreased. 
D) Partial pressure of carbon dioxide is decreased.

Question 9

Boyle's law states that the pressure exerted by a gas varies directly with the volume of the gas.

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

The most important factor that determines the extent to which haemoglobin is saturated with oxygen is the blood PO₂.

Accepted Answer

A) True 
 B)False

Question 12

Pulmonary surfactant increases alveolar surface tension and does not affect lung expansion.

Accepted Answer

A) True 
 B)False

Question 13

Emphysema can be brought on by recurrent episodes of asthma and/or chronic bronchitis.

Accepted Answer

A) True 
 B)False

Question 14

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

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 15

Which of these statements describes functional residual capacity

Accepted Answer

A) the extra volume of air that can be actively expired 
B) the minimum volume of air remaining in the lungs even after a maximal expiration 
C) the volume of air in the lungs at the end of a normal passive respiration 
D) the volume of air entering or leaving the lungs during a single breath 
A) the extra volume of air that can be actively expired 
B) the minimum volume of air remaining in the lungs even after a maximal expiration 
C) the volume of air in the lungs at the end of a normal passive respiration 
D) the volume of air entering or leaving the lungs during a single breath

Question 16

According to ____________________ law, at any constant temperature, the pressure of a gas varies inversely with the volume of the gas.

Accepted Answer

The answer of According to ____________________ law, at any constant...

Question 17

____________________ is a respiratory disease characterized by collapse of the smaller airways and a breakdown of alveolar walls.

Accepted Answer

The answer of ____________________ is a respiratory disease characterized by...

Question 18

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 19

An increase in airway resistance and an increase in alveolar surface tension both increase the work of breathing.

Accepted Answer

A) True 
 B)False

Question 20

Which one of these spirometry results would NOT be expected of a patient suffering from obstructive lung disease

Accepted Answer

A) normal total lung capacity 
B) increased functional residual capacity 
C) decreased residual volume 
D) decreased FEV1 
A) normal total lung capacity 
B) increased functional residual capacity 
C) decreased residual volume 
D) decreased FEV1

Carbonic anhydrase catalyzes the formation of the oxyhaemoglobin.

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

Intrapleural pressure is usually less than atmospheric pressure.

Systemic arterial PO₂ is greater than tissue PO₂.

What is the primary regulator of the magnitude of ventilation in normal circumstances

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

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.) -extra volume of air that can be actively expired by contraction of expiratory muscles beyond that normally expired

Which one of these situations occurs if the oxygen-haemoglobin dissociation curve is shifted to the right

Boyle's law states that the pressure exerted by a gas varies directly with the volume of the gas.

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

The most important factor that determines the extent to which haemoglobin is saturated with oxygen is the blood PO₂.

Pulmonary surfactant increases alveolar surface tension and does not affect lung expansion.

Emphysema can be brought on by recurrent episodes of asthma and/or chronic bronchitis.

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

Which of these statements describes functional residual capacity

According to ____________________ law, at any constant temperature, the pressure of a gas varies inversely with the volume of the gas.

____________________ is a respiratory disease characterized by collapse of the smaller airways and a breakdown of alveolar walls.

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

An increase in airway resistance and an increase in alveolar surface tension both increase the work of breathing.

Which one of these spirometry results would NOT be expected of a patient suffering from obstructive lung disease

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

Exam 12: The Respiratory System

Carbonic anhydrase catalyzes the formation of the oxyhaemoglobin.

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

Intrapleural pressure is usually less than atmospheric pressure.

Systemic arterial PO₂ is greater than tissue PO₂.

What is the primary regulator of the magnitude of ventilation in normal circumstances

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

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.) -extra volume of air that can be actively expired by contraction of expiratory muscles beyond that normally expired

Which one of these situations occurs if the oxygen-haemoglobin dissociation curve is shifted to the right

Boyle's law states that the pressure exerted by a gas varies directly with the volume of the gas.

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

The most important factor that determines the extent to which haemoglobin is saturated with oxygen is the blood PO₂.

Pulmonary surfactant increases alveolar surface tension and does not affect lung expansion.

Emphysema can be brought on by recurrent episodes of asthma and/or chronic bronchitis.

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

Which of these statements describes functional residual capacity

According to ____________________ law, at any constant temperature, the pressure of a gas varies inversely with the volume of the gas.

____________________ is a respiratory disease characterized by collapse of the smaller airways and a breakdown of alveolar walls.

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

An increase in airway resistance and an increase in alveolar surface tension both increase the work of breathing.

Which one of these spirometry results would NOT be expected of a patient suffering from obstructive lung disease

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