NR 224 Exam 2 Fundamentals Nursing Skills
Chamberlain 2026/2027 Test Bank with
Verified Answers and Detailed Rationales
Question 1
What is ventilation?
• A. The ability of the cardiovascular system to pump oxygenated blood to
tissues and return deoxygenated blood to lungs
• B. Movement of air into and out of lungs, regulation in alveoli
• C. Low oxygen in tissues
• D. Low oxygen in blood
Correct Answer: B. Movement of air into and out of lungs, regulation in
alveoli
Rationale:
1. Ventilation is the mechanical process of moving air in and out of the
lungs.
2. It involves the alveoli for gas exchange regulation.
,2|Page
3. The source indicates B is correct.
4. This is distinct from perfusion (blood flow).
Question 2
What is perfusion?
• A. Movement of air into and out of lungs
• B. Ability of the cardiovascular system to pump oxygenated blood to
tissues and return deoxygenated blood to lungs
• C. Low oxygen in tissues
• D. Low oxygen in blood
Correct Answer: B. Ability of the cardiovascular system to pump oxygenated
blood to tissues and return deoxygenated blood to lungs
Rationale:
1. Perfusion is the process of blood flow through tissues.
2. It involves the cardiovascular system pumping oxygenated blood.
3. Deoxygenated blood returns to the lungs.
4. The source indicates B is correct.
Question 3
What does the pulmonary system include?
,3|Page
• A. Only the lungs
• B. Lungs, airways, chest wall, and blood vessels
• C. Only the heart and blood vessels
• D. Only the trachea and bronchi
Correct Answer: B. Lungs, airways, chest wall, and blood vessels
Rationale:
1. The pulmonary system includes the lungs for gas exchange.
2. Airways (trachea, bronchi, bronchioles) conduct air.
3. The chest wall provides the structure for breathing.
4. Pulmonary blood vessels transport blood for gas exchange.
5. The source indicates B is correct.
Question 4
What is hypoxia?
• A. Low oxygen in tissues
• B. Low oxygen in blood
• C. Inadequate ventilation to meet oxygen needs
• D. Increased respiratory rate causing excess CO2 elimination
Correct Answer: A. Low oxygen in tissues
Rationale:
, 4|Page
1. Hypoxia refers to low oxygen at the tissue level.
2. It can result from various causes including hypoxemia.
3. The source indicates A is correct.
4. Tissues cannot function properly without adequate oxygen.
Question 5
What is hypoxemia?
• A. Low oxygen in tissues
• B. Low oxygen in blood
• C. Inadequate ventilation to meet oxygen needs
• D. Increased respiratory rate causing excess CO2 elimination
Correct Answer: B. Low oxygen in blood
Rationale:
1. Hypoxemia refers to low oxygen in the blood.
2. It is measured by arterial blood gas (PaO2).
3. The source indicates B is correct.
4. Hypoxemia can lead to tissue hypoxia.
Question 6
What is hypoventilation?