Question 1

The respiratory airways filter, warm, and humidify incoming air.

Accepted Answer

A) True 
 B)False

Question 2

Complete each of the following statments.
The ____________________ nerve supplies the diaphragm.

Accepted Answer

The answer of Complete each of the following statments.
The ____________________...

Question 3

Complete each of the following statments.
The subjective sensation of not getting enough air is known as ____________________.

Accepted Answer

The answer of Complete each of the following statments.
The subjective...

Question 4

Intrapleural pressure exceeds airway pressure

Accepted Answer

A)  during normal quiet breathing 
B)  during maximal forced expiration 
C)  in response to a pneumothorax 
D)  during maximal forced expiration and in response to a pneumothorax 
E)  all of these 
A)  during normal quiet breathing 
B)  during maximal forced expiration 
C)  in response to a pneumothorax 
D)  during maximal forced expiration and in response to a pneumothorax 
E)  all of these

Question 5

Airway resistance

Accepted Answer

A)  is normally the primary factor determining the amount of flow into/out of the lungs 
B)  is increased when the diameter of the airways becomes reduced 
C)  when elevated, requires an increased pressure gradient between the lungs and atmosphere through vigorous respiratory efforts to move even normal volumes of air into and out of the lungs 
D)  is increased when the diameter of the airways becomes reduced and, when elevated, requires an increased pressure gradient between the lungs and atmosphere through vigorous respiratory efforts to move even normal volumes of air into and out of the lungs. 
E)  all of these 
A)  is normally the primary factor determining the amount of flow into/out of the lungs 
B)  is increased when the diameter of the airways becomes reduced 
C)  when elevated, requires an increased pressure gradient between the lungs and atmosphere through vigorous respiratory efforts to move even normal volumes of air into and out of the lungs 
D)  is increased when the diameter of the airways becomes reduced and, when elevated, requires an increased pressure gradient between the lungs and atmosphere through vigorous respiratory efforts to move even normal volumes of air into and out of the lungs. 
E)  all of these

Question 6

Systemic venous $\mathrm { P } _ { 0 _ { 2 } }$ is ____ alveolar $\mathrm { P } _ { 0 _ { 2 } }$ , and systemic venous $\mathrm { P } _ { 0 _ { 2 } }$ is ____ alveolar $\mathrm { P } _ { 0 _ { 2 } }$ .

Accepted Answer

A)  greater than; greater than 
B)  greater than; less than 
C)  less than; greater than 
D)  less than; less than 
E)  equal to; equal to 
A)  greater than; greater than 
B)  greater than; less than 
C)  less than; greater than 
D)  less than; less than 
E)  equal to; equal to

Question 7

When the level of blood flow is not ideally matched with the amount of airflow in a localized area of lung tissue:

Accepted Answer

A)  Autoregulatory mechanisms are invoked. 
B)  The autonomic nervous system couples the events more ideally. 
C)  And if airflow is low and blood flow too high, arteriolar vasoconstriction occurs. 
D)  Autoregulatory mechanisms are invoked and the autonomic nervous system couples the events more ideally. 
E)  Autoregulatory mechanisms are invoked and, if airflow is low and blood flow too high, arteriolar vasoconstriction occurs. 
A)  Autoregulatory mechanisms are invoked. 
B)  The autonomic nervous system couples the events more ideally. 
C)  And if airflow is low and blood flow too high, arteriolar vasoconstriction occurs. 
D)  Autoregulatory mechanisms are invoked and the autonomic nervous system couples the events more ideally. 
E)  Autoregulatory mechanisms are invoked and, if airflow is low and blood flow too high, arteriolar vasoconstriction occurs.

Question 8

Complete each of the following statments.
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 Complete each of the following statments.
According to...

Question 9

The respiratory system provides a route for water and heat elimination.

Accepted Answer

A) True 
 B)False

Question 10

The respiratory center is located in the cerebral cortex.

Accepted Answer

A) True 
 B)False

Question 11

Carbonic anhydrase catalyzes the formation of the oxyhemoglobin.

Accepted Answer

A) True 
 B)False

Question 12

Pneumothorax develops from the accumulation of fluid in the alveoli.

Accepted Answer

A) True 
 B)False

Question 13

The inspiratory muscles include the

Accepted Answer

A)  diaphragm and internal intercostal muscles 
B)  diaphragm and external intercostal muscles 
C)  diaphragm and abdominal muscles 
D)  internal and external intercostal muscles 
E)  none of these 
A)  diaphragm and internal intercostal muscles 
B)  diaphragm and external intercostal muscles 
C)  diaphragm and abdominal muscles 
D)  internal and external intercostal muscles 
E)  none of these

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

Newborn respiratory distress syndrome is caused by an excess of pulmonary surfactant.

Accepted Answer

A) True 
 B)False

Question 16

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

Accepted Answer

A)  1.5 
B)  15 
C)  60 
D)  72 
E)  100 
A)  1.5 
B)  15 
C)  60 
D)  72 
E)  100

Question 17

A person who has a tidal volume of 400 ml/breath, a respiratory rate of 14 breaths/minute, and an anatomic dead space volume of 120 ml will have a pulmonary ventilation rate of

Accepted Answer

A)  3000 ml/minute 
B)  3920 ml/minute 
C)  4260 ml/minute 
D)  5600 ml/minute 
E)  6240 ml/minute 
A)  3000 ml/minute 
B)  3920 ml/minute 
C)  4260 ml/minute 
D)  5600 ml/minute 
E)  6240 ml/minute

Question 18

Inspiration is always an active process.

Accepted Answer

A) True 
 B)False

Question 19

When intra-alveolar pressure becomes greater than atmospheric pressure

Accepted Answer

A)  Air will flow out of the lungs. 
B)  Air will flow into the lungs. 
C)  There will be no air flow. 
D)  Air will flow out of the lungs or there will be no air flow. 
E)  None of these. 
A)  Air will flow out of the lungs. 
B)  Air will flow into the lungs. 
C)  There will be no air flow. 
D)  Air will flow out of the lungs or there will be no air flow. 
E)  None of these.

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 13: A--The Respiratory System

The respiratory airways filter, warm, and humidify incoming air.

Complete each of the following statments. The ____________________ nerve supplies the diaphragm.

Complete each of the following statments. The subjective sensation of not getting enough air is known as ____________________.

Intrapleural pressure exceeds airway pressure

Airway resistance

Systemic venous P02\mathrm { P } _ { 0 _ { 2 } }P02​​ is ____ alveolar P02\mathrm { P } _ { 0 _ { 2 } }P02​​ , and systemic venous P02\mathrm { P } _ { 0 _ { 2 } }P02​​ is ____ alveolar P02\mathrm { P } _ { 0 _ { 2 } }P02​​ .

When the level of blood flow is not ideally matched with the amount of airflow in a localized area of lung tissue:

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

The respiratory system provides a route for water and heat elimination.

The respiratory center is located in the cerebral cortex.

Carbonic anhydrase catalyzes the formation of the oxyhemoglobin.

Pneumothorax develops from the accumulation of fluid in the alveoli.

The inspiratory muscles include the

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

Newborn respiratory distress syndrome is caused by an excess of pulmonary surfactant.

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

A person who has a tidal volume of 400 ml/breath, a respiratory rate of 14 breaths/minute, and an anatomic dead space volume of 120 ml will have a pulmonary ventilation rate of

Inspiration is always an active process.

When intra-alveolar pressure becomes greater than atmospheric pressure

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

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters

Systemic venous $\mathrm { P } _ { 0 _ { 2 } }$ is ____ alveolar $\mathrm { P } _ { 0 _ { 2 } }$ , and systemic venous $\mathrm { P } _ { 0 _ { 2 } }$ is ____ alveolar $\mathrm { P } _ { 0 _ { 2 } }$ .