NSG530 Exam 1 V2 | NSG 530 Advanced
Pathophysiology | Wilkes University
This study guide is intended to provide comprehensive preparation for advanced
pathophysiology assessments related to cellular dysfunction, homeostatic imbalance, and
disease progression mechanisms. The content reflects advanced nursing and healthcare
concepts commonly tested in graduate-level examinations.
This version contains realistic exam-style questions designed to strengthen understanding of
disease etiology, pathogenesis, and clinical manifestations. Detailed expert explanations
support deeper understanding and practical clinical application.
════════════════════════════════════
The Exam Covers:
• Cellular metabolism disorders
• Tissue repair and healing
• Altered immune function
• Fever and inflammatory processes
• Electrolyte regulation disorders
• Genetic inheritance patterns
• Pathophysiology assessment concepts
• Clinical manifestations of disease
════════════════════════════════════
1. What is the most common cause of cellular injury in clinical practice?
A. Chemical agents
B. Nutritional imbalances
C. Genetic factors
D. Hypoxia
Correct Answer: D
,Expert Explanation: Hypoxia, or oxygen deprivation, is the most common cause of cellular
injury. It typically results from ischemia, which is a reduced blood supply to tissues.
Without oxygen, the cell cannot maintain oxidative phosphorylation, leading to a rapid
decrease in ATP production and subsequent cellular dysfunction.
2. Which mechanism is responsible for cellular swelling during hypoxic injury?
A. Increased protein synthesis
B. Activation of apoptosis
C. Failure of the sodium-potassium pump
D. Release of lysosomal enzymes
Correct Answer: C
Expert Explanation: When ATP levels drop due to hypoxia, the Na+/K+-ATPase pump
fails. This causes sodium to accumulate inside the cell, while potassium diffuses out. The
resulting osmotic pressure draws water into the cell, leading to acute cellular swelling, also
known as oncosis.
3. Which cellular adaptation is characterized by the replacement of one adult cell type by
another?
A. Metaplasia
B. Hypertrophy
C. Atrophy
, D. Dysplasia
Correct Answer: A
Expert Explanation: Metaplasia is a reversible change in which one differentiated cell type
is replaced by another cell type better able to withstand a specific stressor. A classic
example is the change from ciliated columnar epithelium to stratified squamous epithelium
in the airways of chronic smokers. While adaptive, this process often results in the loss of
important functional mechanisms like mucus secretion.
4. What is the primary difference between necrosis and apoptosis?
A. Necrosis is always programmed, while apoptosis is accidental.
B. Necrosis is a physiological process, while apoptosis is always pathological.
C. Apoptosis involves cell swelling, while necrosis involves cell shrinkage.
D. Necrosis causes an inflammatory response, whereas apoptosis does not.
Correct Answer: D
Expert Explanation: Necrosis is characterized by the loss of membrane integrity and the
leaking of cellular contents, which triggers an inflammatory response in the surrounding
tissue. In contrast, apoptosis is a highly regulated, programmed cell death where the cell
shrinks and is neatly packaged into apoptotic bodies. Because the cell membrane remains
intact during apoptosis, it does not typically elicit inflammation.
5. Which type of necrosis is most commonly associated with ischemic injury in the brain?
A. Liquefactive necrosis
Pathophysiology | Wilkes University
This study guide is intended to provide comprehensive preparation for advanced
pathophysiology assessments related to cellular dysfunction, homeostatic imbalance, and
disease progression mechanisms. The content reflects advanced nursing and healthcare
concepts commonly tested in graduate-level examinations.
This version contains realistic exam-style questions designed to strengthen understanding of
disease etiology, pathogenesis, and clinical manifestations. Detailed expert explanations
support deeper understanding and practical clinical application.
════════════════════════════════════
The Exam Covers:
• Cellular metabolism disorders
• Tissue repair and healing
• Altered immune function
• Fever and inflammatory processes
• Electrolyte regulation disorders
• Genetic inheritance patterns
• Pathophysiology assessment concepts
• Clinical manifestations of disease
════════════════════════════════════
1. What is the most common cause of cellular injury in clinical practice?
A. Chemical agents
B. Nutritional imbalances
C. Genetic factors
D. Hypoxia
Correct Answer: D
,Expert Explanation: Hypoxia, or oxygen deprivation, is the most common cause of cellular
injury. It typically results from ischemia, which is a reduced blood supply to tissues.
Without oxygen, the cell cannot maintain oxidative phosphorylation, leading to a rapid
decrease in ATP production and subsequent cellular dysfunction.
2. Which mechanism is responsible for cellular swelling during hypoxic injury?
A. Increased protein synthesis
B. Activation of apoptosis
C. Failure of the sodium-potassium pump
D. Release of lysosomal enzymes
Correct Answer: C
Expert Explanation: When ATP levels drop due to hypoxia, the Na+/K+-ATPase pump
fails. This causes sodium to accumulate inside the cell, while potassium diffuses out. The
resulting osmotic pressure draws water into the cell, leading to acute cellular swelling, also
known as oncosis.
3. Which cellular adaptation is characterized by the replacement of one adult cell type by
another?
A. Metaplasia
B. Hypertrophy
C. Atrophy
, D. Dysplasia
Correct Answer: A
Expert Explanation: Metaplasia is a reversible change in which one differentiated cell type
is replaced by another cell type better able to withstand a specific stressor. A classic
example is the change from ciliated columnar epithelium to stratified squamous epithelium
in the airways of chronic smokers. While adaptive, this process often results in the loss of
important functional mechanisms like mucus secretion.
4. What is the primary difference between necrosis and apoptosis?
A. Necrosis is always programmed, while apoptosis is accidental.
B. Necrosis is a physiological process, while apoptosis is always pathological.
C. Apoptosis involves cell swelling, while necrosis involves cell shrinkage.
D. Necrosis causes an inflammatory response, whereas apoptosis does not.
Correct Answer: D
Expert Explanation: Necrosis is characterized by the loss of membrane integrity and the
leaking of cellular contents, which triggers an inflammatory response in the surrounding
tissue. In contrast, apoptosis is a highly regulated, programmed cell death where the cell
shrinks and is neatly packaged into apoptotic bodies. Because the cell membrane remains
intact during apoptosis, it does not typically elicit inflammation.
5. Which type of necrosis is most commonly associated with ischemic injury in the brain?
A. Liquefactive necrosis
