Question 1

The law that applies to the amount of CO2 you could dissolve in a Pepsi is called _ law.

Accepted Answer

Henry's

Question 2

A smoker sees his doctor because he had a persistent cough for months and is short of breath after very little exertion. What diagnosis will the doctor make and what can the person expect if he does not quit smoking?

Accepted Answer

The person is suffering from chronic bronchitis, which causes the dyspnea and coughing. If he does not stop smoking, he can expect frequent pulmonary infections, more coughing, and progressively worse dyspnea (all symptoms of chronic obstructive pulmonary disease). Ultimately, he can expect to develop hypoxemia, CO₂ retention, and respiratory acidosis. He may develop emphysema or lung cancer.

Question 3

Which of the following does not influence hemoglobin saturation?

Accepted Answer

A)  BPG 
B)  temperature 
C)  carbon dioxide 
D)  nitric oxide 
A)  BPG 
B)  temperature 
C)  carbon dioxide 
D)  nitric oxide D

Question 4

Which center is located in the pons?

Accepted Answer

A)  pacemaker neuron center 
B)  expiratory center 
C)  inspiratory center 
D)  pontine respirator group (PRG) 
A)  pacemaker neuron center 
B)  expiratory center 
C)  inspiratory center 
D)  pontine respirator group (PRG)

Question 5

Figure 22.1Using Figure 22.1, match the following:
-Terminal bronchioles are lined with epithelium.

Accepted Answer

The answer of   Figure 22.1Using Figure 22.1, match...

Question 6

The walls of the alveoli are composed of two types of cells, type I and type II. The function of type II is to .

Accepted Answer

A)  replace mucus in the alveoli 
B)  trap dust and other debris 
C)  protect the lungs from bacterial invasion 
D)  secrete surfactant 
A)  replace mucus in the alveoli 
B)  trap dust and other debris 
C)  protect the lungs from bacterial invasion 
D)  secrete surfactant

Question 7

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

Accepted Answer

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

Question 8

What is the chloride shift and why does it occur?

Accepted Answer

The chloride shift is an ionic exchange

Question 9

A disorder characterized by permanent enlargement of the alveoli accompanied by destruction of the alveolar walls is .

Accepted Answer

The answer of A disorder characterized by permanent enlargement of...

Question 10

Select the correct statement about oxygen transport in blood.

Accepted Answer

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

Question 11

Surfactant helps to prevent the alveoli from collapsing by .

Accepted Answer

A)  warming the air before it enters 
B)  humidifying the air before it enters 
C)  interfering with the cohesiveness of water molecules, thereby reducing the surface tension of alveolar fluid 
D)  protecting the surface of alveoli from dehydration and other environmental variations 
A)  warming the air before it enters 
B)  humidifying the air before it enters 
C)  interfering with the cohesiveness of water molecules, thereby reducing the surface tension of alveolar fluid 
D)  protecting the surface of alveoli from dehydration and other environmental variations

Question 12

Because the lungs are filled with fluid during fetal life, which of the following statements is true regarding respiratory exchange?

Accepted Answer

A)  Respiratory exchanges are not necessary. 
B)  Respiratory exchanges are made through the placenta. 
C)  Because the lungs develop later in gestation, fetuses do not need a mechanism for respiratory exchange. 
D)  Respiratory exchanges are made through the ductus arteriosus. 
A)  Respiratory exchanges are not necessary. 
B)  Respiratory exchanges are made through the placenta. 
C)  Because the lungs develop later in gestation, fetuses do not need a mechanism for respiratory exchange. 
D)  Respiratory exchanges are made through the ductus arteriosus.

Question 13

Which of the following determines lung compliance?

Accepted Answer

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

Question 14

Most inspired particles such as dust fail to reach the lungs because of the _ .

Accepted Answer

A)  ciliated mucous lining in the nose 
B)  abundant blood supply to nasal mucosa 
C)  action of the epiglottis 
D)  porous structure of turbinate bones 
A)  ciliated mucous lining in the nose 
B)  abundant blood supply to nasal mucosa 
C)  action of the epiglottis 
D)  porous structure of turbinate bones

Question 15

During normal quiet breathing, approximately 750 ml of air moves into and out of the lungs with each breath.

Accepted Answer

A) True 
 B)False

Question 16

Which of the choices below is not a role of the pleura?

Accepted Answer

A)  allows the lungs to inflate and deflate without friction 
B)  helps limit the spread of local infections 
C)  aids in blood flow to and from the heart because the heart sits between the lungs 
D)  helps divide the thoracic cavity into three chambers 
A)  allows the lungs to inflate and deflate without friction 
B)  helps limit the spread of local infections 
C)  aids in blood flow to and from the heart because the heart sits between the lungs 
D)  helps divide the thoracic cavity into three chambers

Question 17

Select the correct statement about the neural mechanisms of respiratory control.

Accepted Answer

A)  The pontine respirator group (PRG) continuously stimulates the medulla to provide inspiratory drive. 
B)  The pons is thought to be instrumental in the smooth transition from inspiration to expiration. 
C)  The dorsal respiratory group neurons depolarize in a rhythmic way to establish the pattern of breathing. 
D)  The ventral respiratory group is contained within the pons. 
A)  The pontine respirator group (PRG) continuously stimulates the medulla to provide inspiratory drive. 
B)  The pons is thought to be instrumental in the smooth transition from inspiration to expiration. 
C)  The dorsal respiratory group neurons depolarize in a rhythmic way to establish the pattern of breathing. 
D)  The ventral respiratory group is contained within the pons.

Question 18

Dalton's law states that the total pressure exerted by a mixture of gases is the sum of the pressures exerted independently by each gas in the mixture.

Accepted Answer

A) True 
 B)False

Question 19

The parietal pleura lines the thoracic wall.

Accepted Answer

A) True 
 B)False

Question 20

The alveolar ventilation rate is the best index of effective ventilation.

Accepted Answer

A) True 
 B)False

Exam 22: The Respiratory System

The law that applies to the amount of CO2 you could dissolve in a Pepsi is called _ law.

A smoker sees his doctor because he had a persistent cough for months and is short of breath after very little exertion. What diagnosis will the doctor make and what can the person expect if he does not quit smoking?

Which of the following does not influence hemoglobin saturation?

Which center is located in the pons?

Figure 22.1Using Figure 22.1, match the following: -Terminal bronchioles are lined with epithelium.

The walls of the alveoli are composed of two types of cells, type I and type II. The function of type II is to .

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

What is the chloride shift and why does it occur?

A disorder characterized by permanent enlargement of the alveoli accompanied by destruction of the alveolar walls is .

Select the correct statement about oxygen transport in blood.

Surfactant helps to prevent the alveoli from collapsing by .

Because the lungs are filled with fluid during fetal life, which of the following statements is true regarding respiratory exchange?

Which of the following determines lung compliance?

Most inspired particles such as dust fail to reach the lungs because of the _ .

During normal quiet breathing, approximately 750 ml of air moves into and out of the lungs with each breath.

Which of the choices below is not a role of the pleura?

Select the correct statement about the neural mechanisms of respiratory control.

Dalton's law states that the total pressure exerted by a mixture of gases is the sum of the pressures exerted independently by each gas in the mixture.

The parietal pleura lines the thoracic wall.

The alveolar ventilation rate is the best index of effective ventilation.

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissues

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 Defensives

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

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The law that applies to the amount of CO₂ you could dissolve in a Pepsi is called _ law.