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NU 545 - Unit 5 Practice Questions and
Answers
Which statement is true regarding the pulmonary system?
Ans: The larynx connects the upper and lower airways
Which statement is true regarding the lower airways?
Ans: The right and left main bronchi enter the lungs at the hila.
What process describes the exchange of carbon dioxide (CO2) for
oxygen?
Ans: Respiration
Which receptor monitors the pH, partial pressure of CO2 (PaCO2),
and the partial pressure of oxygen (PaO2) in arterial blood?
Ans: Central chemoreceptors
Which physiologic alteration is present in an individual with
emphysema?
Ans: Increased compliance
Which steps are involved in the process of gas exchange? (Select
all that apply.)
Ans: Ventilation, Diffusion, Perfusion
Which structures are considered part of the upper airway? (Select
all that apply.)
Ans: Nasopharynx, Oropharynx
Which structures are considered part of the acinus? (Select all that
apply.)
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, 2 | Page
Ans: Respiratory bronchioles, Alveolar ducts, Alveoli
Which structures are major accessory muscles of respiration?
(Select all that apply.)
Ans: Diaphragm, External Intercostals
Which alterations involved with aging are considered normal?
(Select all that apply.)
Ans: Increased flow resistance, Alterations in gas exchange, Loss of
recoil
The binding of oxygen to hemoglobin occurs in the lungs; the
reverse process in which oxygen is released from hemoglobin
occurs in the?
Ans: Tissues
The mechanical movement of gas or air into and out of the lungs
is known as ventilation. Breathing is usually involuntary because
changes in the rate and volume are adjusted automatically by the
nervous system to maintain normal gas exchange. The respiratory
system in the brain that becomes active when increased ventilatory
effort is required is the?
Ans: Dorsal respiratory group
Which illness is a type of liquefactive necrosis?
Ans: Abscess
Which statement is true regarding bronchiolitis?
Ans: Respiratory distress develops within 24-72 hours
What is the appropriate term for inadequate alveolar ventilation
in relation to metabolic demands?
Ans: Hypoventilation
© 2025 All rights reserved
NU 545 - Unit 5 Practice Questions and
Answers
Which statement is true regarding the pulmonary system?
Ans: The larynx connects the upper and lower airways
Which statement is true regarding the lower airways?
Ans: The right and left main bronchi enter the lungs at the hila.
What process describes the exchange of carbon dioxide (CO2) for
oxygen?
Ans: Respiration
Which receptor monitors the pH, partial pressure of CO2 (PaCO2),
and the partial pressure of oxygen (PaO2) in arterial blood?
Ans: Central chemoreceptors
Which physiologic alteration is present in an individual with
emphysema?
Ans: Increased compliance
Which steps are involved in the process of gas exchange? (Select
all that apply.)
Ans: Ventilation, Diffusion, Perfusion
Which structures are considered part of the upper airway? (Select
all that apply.)
Ans: Nasopharynx, Oropharynx
Which structures are considered part of the acinus? (Select all that
apply.)
© 2025 All rights reserved
, 2 | Page
Ans: Respiratory bronchioles, Alveolar ducts, Alveoli
Which structures are major accessory muscles of respiration?
(Select all that apply.)
Ans: Diaphragm, External Intercostals
Which alterations involved with aging are considered normal?
(Select all that apply.)
Ans: Increased flow resistance, Alterations in gas exchange, Loss of
recoil
The binding of oxygen to hemoglobin occurs in the lungs; the
reverse process in which oxygen is released from hemoglobin
occurs in the?
Ans: Tissues
The mechanical movement of gas or air into and out of the lungs
is known as ventilation. Breathing is usually involuntary because
changes in the rate and volume are adjusted automatically by the
nervous system to maintain normal gas exchange. The respiratory
system in the brain that becomes active when increased ventilatory
effort is required is the?
Ans: Dorsal respiratory group
Which illness is a type of liquefactive necrosis?
Ans: Abscess
Which statement is true regarding bronchiolitis?
Ans: Respiratory distress develops within 24-72 hours
What is the appropriate term for inadequate alveolar ventilation
in relation to metabolic demands?
Ans: Hypoventilation
© 2025 All rights reserved
