Question 1

Intrapulmonary pressure is the ________.

Accepted Answer

A)  difference between atmospheric pressure and respiratory pressure 
B)  pressure within the pleural cavity 
C)  pressure within the alveoli of the lungs 
D)  negative pressure in the intrapleural space 
A)  difference between atmospheric pressure and respiratory pressure 
B)  pressure within the pleural cavity 
C)  pressure within the alveoli of the lungs 
D)  negative pressure in the intrapleural space

Question 2

Which of the following determines lung compliance?

Accepted Answer

A)  muscles of inspiration 
B)  alveolar surface tension 
C)  airway opening 
D)  flexibility of the thoracic cage 
A)  muscles of inspiration 
B)  alveolar surface tension 
C)  airway opening 
D)  flexibility of the thoracic cage

Question 3

Which statement about CO2 is FALSE?

Accepted Answer

A)  More CO2 dissolves in the blood plasma than is carried in the RBCs. 
B)  Its concentration in the blood is decreased by hyperventilation. 
C)  CO2 concentrations are greater in venous blood than arterial blood. 
D)  Its accumulation in the blood is associated with a decrease in pH. 
A)  More CO2 dissolves in the blood plasma than is carried in the RBCs. 
B)  Its concentration in the blood is decreased by hyperventilation. 
C)  CO2 concentrations are greater in venous blood than arterial blood. 
D)  Its accumulation in the blood is associated with a decrease in pH.

Question 4

Select the correct statement about oxygen transport in blood.

Accepted Answer

A)  During conditions of acidosis, hemoglobin is able to carry oxygen more efficiently. 
B)  Increased BPG levels in the red blood cells enhance oxygen-carrying capacity. 
C)  A 50% oxygen saturation level of blood returning to the lungs might indicate an activity level higher than normal. 
D)  During normal activity, a molecule of hemoglobin returning to the lungs carries one molecule of O2. 
A)  During conditions of acidosis, hemoglobin is able to carry oxygen more efficiently. 
B)  Increased BPG levels in the red blood cells enhance oxygen-carrying capacity. 
C)  A 50% oxygen saturation level of blood returning to the lungs might indicate an activity level higher than normal. 
D)  During normal activity, a molecule of hemoglobin returning to the lungs carries one molecule of O2.

Question 5

Which of the following counteracts the movement of bicarbonate ions from the RBC?

Accepted Answer

A)  the Bohr effect 
B)  the Haldane effect 
C)  release of hydrogen ion 
D)  chloride shifting 
A)  the Bohr effect 
B)  the Haldane effect 
C)  release of hydrogen ion 
D)  chloride shifting

Question 6

Ventilation perfusion coupling means that more blood flows past functional alveoli than past nonfunctional alveoli.

Accepted Answer

A) True 
 B)False

Question 7

The loudness of a person's voice depends on the ________.

Accepted Answer

A)  length of the vocal folds 
B)  force with which air rushes across the vocal folds 
C)  thickness of vestibular folds 
D)  strength of the intrinsic laryngeal muscles 
A)  length of the vocal folds 
B)  force with which air rushes across the vocal folds 
C)  thickness of vestibular folds 
D)  strength of the intrinsic laryngeal muscles

Question 8

Match the following:
-Terminates in alveoli.

Accepted Answer

A) Alveolar duct 
B) Segmental (tertiary) bronchi 
C) Type I alveolar cells 
D) Respiratory bronchioles 
E) Type II alveolar cells 
A) Alveolar duct 
B) Segmental (tertiary) bronchi 
C) Type I alveolar cells 
D) Respiratory bronchioles 
E) Type II alveolar cells

Question 9

Which of the following is an appropriate response to carbon monoxide (CO)poisoning?

Accepted Answer

A)  hyperventilation to exhale CO from the body 
B)  hyperbaric oxygen chamber to increase PO2 and clear CO from the body 
C)  slow breathing into a paper bag 
D)  immediate application of bicarbonate ions to facilitate removal of CO from Hb 
A)  hyperventilation to exhale CO from the body 
B)  hyperbaric oxygen chamber to increase PO2 and clear CO from the body 
C)  slow breathing into a paper bag 
D)  immediate application of bicarbonate ions to facilitate removal of CO from Hb

Question 10

The lungs are perfused by two circulations: the pulmonary and the bronchial.The pulmonary circulation is for oxygenation of blood.The bronchial circulation supplies blood to the lung structures (tissue).

Accepted Answer

A) True 
 B)False

Question 11

With the Bohr effect,more oxygen is released because a(n)________.

Accepted Answer

A)  decrease in pH (acidosis) weakens the hemoglobin-oxygen bond 
B)  increase in pH (alkalosis) strengthens the hemoglobin-oxygen bond 
C)  decrease in pH (acidosis) strengthens the hemoglobin-oxygen bond 
D)  increase in pH (alkalosis) weakens the hemoglobin-oxygen bond 
A)  decrease in pH (acidosis) weakens the hemoglobin-oxygen bond 
B)  increase in pH (alkalosis) strengthens the hemoglobin-oxygen bond 
C)  decrease in pH (acidosis) strengthens the hemoglobin-oxygen bond 
D)  increase in pH (alkalosis) weakens the hemoglobin-oxygen bond

Question 12

Complete the following statement using the choices below.Air moves out of the lungs when the pressure inside the lungs is ________.

Accepted Answer

A)  equal to the pressure in the atmosphere 
B)  less than the pressure in the atmosphere 
C)  greater than the intra-alveolar pressure 
D)  greater than the pressure in the atmosphere 
A)  equal to the pressure in the atmosphere 
B)  less than the pressure in the atmosphere 
C)  greater than the intra-alveolar pressure 
D)  greater than the pressure in the atmosphere

Question 13

The lung volume that represents the total volume of exchangeable air is the ________.

Accepted Answer

A)  tidal volume 
B)  expiratory reserve volume 
C)  inspiratory capacity 
D)  vital capacity 
A)  tidal volume 
B)  expiratory reserve volume 
C)  inspiratory capacity 
D)  vital capacity

Question 14

The symptoms of hyperventilation may be averted by breathing into a paper bag because it ________.

Accepted Answer

A)  reduces brain perfusion by constricting cerebral blood vessels 
B)  helps retain oxygen in the blood 
C)  lowers blood pH levels 
D)  helps retain carbon dioxide in the blood 
A)  reduces brain perfusion by constricting cerebral blood vessels 
B)  helps retain oxygen in the blood 
C)  lowers blood pH levels 
D)  helps retain carbon dioxide in the blood

Question 15

The amount of air that can be inspired above the tidal volume is called ________.

Accepted Answer

A)  inspiratory reserve volume 
B)  vital capacity 
C)  reserve air 
D)  expiratory capacity 
A)  inspiratory reserve volume 
B)  vital capacity 
C)  reserve air 
D)  expiratory capacity

Question 16

Which of the following refers to the movement of air into and out of the lungs?

Accepted Answer

A)  pulmonary ventilation 
B)  external respiration 
C)  internal respiration 
D)  gas exchange 
A)  pulmonary ventilation 
B)  external respiration 
C)  internal respiration 
D)  gas exchange

Question 17

Select the correct statement about the physical factors influencing pulmonary ventilation.

Accepted Answer

A)  Surfactant helps increase alveolar surface tension. 
B)  A lung that is less elastic will require less muscle action to perform adequate ventilation. 
C)  A decrease in compliance causes an increase in ventilation. 
D)  As alveolar surface tension increases, additional muscle action will be required. 
A)  Surfactant helps increase alveolar surface tension. 
B)  A lung that is less elastic will require less muscle action to perform adequate ventilation. 
C)  A decrease in compliance causes an increase in ventilation. 
D)  As alveolar surface tension increases, additional muscle action will be required.

Question 18

Match the following:
-ERV + RV.

Accepted Answer

A) Inspiratory capacity 
B) Total lung capacity 
C) Vital capacity 
D) Functional residual capacity 
A) Inspiratory capacity 
B) Total lung capacity 
C) Vital capacity 
D) Functional residual capacity

Question 19

The major nonelastic source of resistance to air flow in the respiratory passageways is ________.

Accepted Answer

A)  air pressure 
B)  friction 
C)  surfactant 
D)  surface tension 
A)  air pressure 
B)  friction 
C)  surfactant 
D)  surface tension

Question 20

How is the bulk of carbon dioxide transported in blood?

Accepted Answer

A)  as carbonic acid in the plasma 
B)  as bicarbonate ions in plasma after first entering the red blood cells 
C)  chemically combined with the heme portion of hemoglobin 
D)  chemically combined with the amino acids of hemoglobin as carbaminohemoglobin in the red blood cells 
A)  as carbonic acid in the plasma 
B)  as bicarbonate ions in plasma after first entering the red blood cells 
C)  chemically combined with the heme portion of hemoglobin 
D)  chemically combined with the amino acids of hemoglobin as carbaminohemoglobin in the red blood cells

Exam 22: The Respiratory System

Intrapulmonary pressure is the ________.

Which of the following determines lung compliance?

Which statement about CO2 is FALSE?

Select the correct statement about oxygen transport in blood.

Which of the following counteracts the movement of bicarbonate ions from the RBC?

Ventilation perfusion coupling means that more blood flows past functional alveoli than past nonfunctional alveoli.

The loudness of a person's voice depends on the ________.

Match the following: -Terminates in alveoli.

Which of the following is an appropriate response to carbon monoxide (CO)poisoning?

The lungs are perfused by two circulations: the pulmonary and the bronchial.The pulmonary circulation is for oxygenation of blood.The bronchial circulation supplies blood to the lung structures (tissue).

With the Bohr effect,more oxygen is released because a(n)________.

Complete the following statement using the choices below.Air moves out of the lungs when the pressure inside the lungs is ________.

The lung volume that represents the total volume of exchangeable air is the ________.

The symptoms of hyperventilation may be averted by breathing into a paper bag because it ________.

The amount of air that can be inspired above the tidal volume is called ________.

Which of the following refers to the movement of air into and out of the lungs?

Select the correct statement about the physical factors influencing pulmonary ventilation.

Match the following: -ERV + RV.

The major nonelastic source of resistance to air flow in the respiratory passageways is ________.

How is the bulk of carbon dioxide transported in blood?

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissue

The Skeleton

Joints

Muscles and Muscle Tissue

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

The Immune System: Innate and Adaptive Body Defenses

The Digestive System

Nutrition,metabolism,and Body Temperature Regulation

The Urinary System

Fluid,electrolyte,and Acid-Base Balance

The Reproductive System

Pregnancy and Human Development

Heredity

Filters

Which statement about CO₂ is FALSE?