Question 1

The vocal folds are found in the ____________________, among the respiratory passages.

Accepted Answer

The answer of The vocal folds are found in the...

Question 2

Which of these statements describes expiratory neurons

Accepted Answer

A) They are found in both the DRG and the VRG. 
B) They send impulses to the expiratory muscles during normal quiet breathing. 
C) They are stimulated by the pneumotaxic centre, and in turn inhibit the inspiratory neurons. 
D) They are stimulated by the inspiratory neurons, and in turn inhibit the inspiratory neurons. 
A) They are found in both the DRG and the VRG. 
B) They send impulses to the expiratory muscles during normal quiet breathing. 
C) They are stimulated by the pneumotaxic centre, and in turn inhibit the inspiratory neurons. 
D) They are stimulated by the inspiratory neurons, and in turn inhibit the inspiratory neurons.

Question 3

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

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 4

What is the respiratory quotient

Accepted Answer

A) the rate at which gases diffuse across the alveolar capillary membrane 
B) the respiratory rate times the tidal volume 
C) the ratio of O₂ consumed to CO₂ produced 
D) the ratio of CO₂ produced to O₂ consumed 
A) the rate at which gases diffuse across the alveolar capillary membrane 
B) the respiratory rate times the tidal volume 
C) the ratio of O₂ consumed to CO₂ produced 
D) the ratio of CO₂ produced to O₂ consumed

Question 5

Which of these statements does NOT describe the plateau portion of the O₂-Hb curve

Accepted Answer

A) It is within the blood PO₂ range that exists at the pulmonary capillaries. 
B) It means that haemoglobin becomes almost nearly saturated in the lungs, unless the pulmonary capillary PO₂ falls below 60 mmHg. 
C) It is within the blood PO₂ range that exists at the systemic capillaries. 
D) It is the range that exists at the pulmonary capillaries. 
A) It is within the blood PO₂ range that exists at the pulmonary capillaries. 
B) It means that haemoglobin becomes almost nearly saturated in the lungs, unless the pulmonary capillary PO₂ falls below 60 mmHg. 
C) It is within the blood PO₂ range that exists at the systemic capillaries. 
D) It is the range that exists at the pulmonary capillaries.

Question 6

The internal intercostal muscles are inspiratory muscles because they lift the ribs upward and outward to enlarge the thoracic cavity.

Accepted Answer

A) True 
 B)False

Question 7

Pneumothorax develops from the accumulation of fluid in the alveoli.

Accepted Answer

A) True 
 B)False

Question 8

___________________ is normally the most important input in regulating the magnitude of ventilation under resting conditions.

Accepted Answer

The answer of ___________________ is normally the most important input...

Question 9

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.)
-amount of air that is available for exchange of gases with the blood per minute

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 of these skeletal muscles is innervated by the phrenic nerve

Accepted Answer

A) rectus abdominis 
B) diaphragm 
C) external intercostal 
D) sternocleidomastoid 
A) rectus abdominis 
B) diaphragm 
C) external intercostal 
D) sternocleidomastoid

Question 11

What happens when intra-alveolar pressure becomes greater than atmospheric pressure

Accepted Answer

A) Air flows out of the lungs. 
B) Air flows into the lungs. 
C) There is no air flow. 
D) The lung collapses. 
A) Air flows out of the lungs. 
B) Air flows into the lungs. 
C) There is no air flow. 
D) The lung collapses.

Question 12

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.)
-volume of air entering or leaving the lungs in a single breath during quiet breathing

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 13

Receptors in the CNS that detect changes in arterial PCO₂ are actually sensitive to the H⁺ concentration of the brain extracellular fluid.

Accepted Answer

A) True 
 B)False

Question 14

Which of these statements does NOT describe PO₂ in the blood

Accepted Answer

A) It refers to the pressure exerted by the amount of oxygen in the atmosphere. 
B) It is the most important factor determining the percent saturation of haemoglobin. 
C) It is normal in carbon monoxide poisoning. 
D) It is highest in the pulmonary vein. 
A) It refers to the pressure exerted by the amount of oxygen in the atmosphere. 
B) It is the most important factor determining the percent saturation of haemoglobin. 
C) It is normal in carbon monoxide poisoning. 
D) It is highest in the pulmonary vein.

Question 15

Pulmonary surfactant is secreted by Type II alveolar cells.

Accepted Answer

A) True 
 B)False

Question 16

Match the physiological factors, labelled a. through e., with the descriptions. (Options may be used more than once or not at all.)
-blood-borne factor that has no effect on 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 17

Which of the following does NOT bring about increased airway resistance

Accepted Answer

A) asthma 
B) epinephrine and norepinephrine 
C) slow-reactive substance of anaphylaxis 
D) emphysema 
A) asthma 
B) epinephrine and norepinephrine 
C) slow-reactive substance of anaphylaxis 
D) emphysema

Question 18

The quantity of air that will flow into and out of the lungs depends solely on the radius of the respiratory airways.

Accepted Answer

A) True 
 B)False

Question 19

The VRG consists of ____________________ and ____________________ neurons.

Accepted Answer

inspirator

Question 20

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (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

The vocal folds are found in the ____________________, among the respiratory passages.

Which of these statements describes expiratory neurons

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

What is the respiratory quotient

Which of these statements does NOT describe the plateau portion of the O₂-Hb curve

The internal intercostal muscles are inspiratory muscles because they lift the ribs upward and outward to enlarge the thoracic cavity.

Pneumothorax develops from the accumulation of fluid in the alveoli.

___________________ is normally the most important input in regulating the magnitude of ventilation under resting conditions.

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.) -amount of air that is available for exchange of gases with the blood per minute

Which of these skeletal muscles is innervated by the phrenic nerve

What happens when intra-alveolar pressure becomes greater than atmospheric pressure

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.) -volume of air entering or leaving the lungs in a single breath during quiet breathing

Receptors in the CNS that detect changes in arterial PCO₂ are actually sensitive to the H⁺ concentration of the brain extracellular fluid.

Which of these statements does NOT describe PO₂ in the blood

Pulmonary surfactant is secreted by Type II alveolar cells.

Match the physiological factors, labelled a. through e., with the descriptions. (Options may be used more than once or not at all.) -blood-borne factor that has no effect on the peripheral chemoreceptors

Which of the following does NOT bring about increased airway resistance

The quantity of air that will flow into and out of the lungs depends solely on the radius of the respiratory airways.

The VRG consists of and neurons.

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (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 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

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Energy Balance and Temperature Regulation

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Exam 12: The Respiratory System

The vocal folds are found in the ____________________, among the respiratory passages.

Which of these statements describes expiratory neurons

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

What is the respiratory quotient

Which of these statements does NOT describe the plateau portion of the O₂-Hb curve

The internal intercostal muscles are inspiratory muscles because they lift the ribs upward and outward to enlarge the thoracic cavity.

Pneumothorax develops from the accumulation of fluid in the alveoli.

___________________ is normally the most important input in regulating the magnitude of ventilation under resting conditions.

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.) -amount of air that is available for exchange of gases with the blood per minute

Which of these skeletal muscles is innervated by the phrenic nerve

What happens when intra-alveolar pressure becomes greater than atmospheric pressure

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (Options may be used more than once or not at all.) -volume of air entering or leaving the lungs in a single breath during quiet breathing

Receptors in the CNS that detect changes in arterial PCO₂ are actually sensitive to the H⁺ concentration of the brain extracellular fluid.

Which of these statements does NOT describe PO₂ in the blood

Pulmonary surfactant is secreted by Type II alveolar cells.

Match the physiological factors, labelled a. through e., with the descriptions. (Options may be used more than once or not at all.) -blood-borne factor that has no effect on the peripheral chemoreceptors

Which of the following does NOT bring about increased airway resistance

The quantity of air that will flow into and out of the lungs depends solely on the radius of the respiratory airways.

The VRG consists of ____________________ and ____________________ neurons.

Match the lung volume/capacity terms, labelled a. through m., with the descriptions. (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 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 VRG consists of and neurons.