PN2003 Variations Midterm Exam Study Guide
PN2003 VARIATIONS IN HEALTH & ILLNESS
MIDTERM EXAMINATION STUDY GUIDE
2026/2027 | 60 Practice Questions | Verified Answers | Graded A+
Core Domains: Pathophysiology Across the Lifespan, Cellular Adaptation & Injury,
Inflammation & Healing, Fluid & Electrolyte Imbalances, Acid-Base Disorders,
Genetics & Genetic Disorders, Immune System Dysfunction, Infectious Disease Processes,
Neoplasia & Cancer Biology, Stress & Coping Mechanisms | Nursing Education Focus
Introduction
This PN2003 Variations in Health & Illness Midterm Exam document for the 2026/2027 academic
cycle reflects the official nursing curriculum requirements for understanding variations in health
across the lifespan. The examination evaluates comprehensive knowledge of pathophysiologic
processes, disease mechanisms, and clinical manifestations essential for nursing assessment,
intervention, and patient education. Each question includes detailed rationales that reinforce
pathophysiologic principles, diagnostic reasoning, and evidence-based nursing practice.
Answer Format
All correct answers are presented in bold and green. Each question appears in bold, with rationales
in italic font that reinforce pathophysiologic principles and clinical reasoning.
CELLULAR ADAPTATION & INJURY
1. A patient with chronic hypertension develops left ventricular hypertrophy. Which
cellular adaptation is this?
A. Atrophy
B. Hypertrophy
C. Hyperplasia
D. Metaplasia
Correct Answer: B. Hypertrophy
Rationale: Hypertrophy is an increase in cell size due to increased workload or stress. In
hypertension, the left ventricle must work harder against elevated systemic resistance, leading to
enlarged cardiac myocytes. This is a reversible adaptive response initially, but prolonged
hypertrophy can progress to heart failure.
2. Which type of cellular adaptation involves a change from one mature cell type to
another?
A. Dysplasia
B. Metaplasia
C. Hyperplasia
D. Hypertrophy
Correct Answer: B. Metaplasia
Rationale: Metaplasia is the reversible replacement of one mature cell type with another mature
cell type, usually in response to chronic irritation. A common example is the change from ciliated
columnar epithelium to stratified squamous epithelium in the trachea of chronic smokers. This
adaptation may increase resistance to stress but can lead to malignancy.
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, PN2003 Variations Midterm Exam Study Guide
3. A biopsy shows disorganized, abnormal cell growth with atypical features. Which
cellular adaptation does this represent?
A. Metaplasia
B. Hyperplasia
C. Dysplasia
D. Hypertrophy
Correct Answer: C. Dysplasia
Rationale: Dysplasia refers to disordered, atypical cellular growth with changes in size, shape,
and organization. It is considered a pre-neoplastic condition that may progress to cancer.
Dysplastic cells show loss of polarity, increased nuclear-to-cytoplasmic ratio, and mitotic figures.
Unlike hyperplasia, dysplasia is not an adaptive response.
4. Which cellular injury results from inadequate oxygen supply to tissues?
A. Chemical injury
B. Hypoxic injury
C. Immunologic injury
D. Physical injury
Correct Answer: B. Hypoxic injury
Rationale: Hypoxic injury occurs when cells receive insufficient oxygen, impairing aerobic
metabolism and ATP production. Without adequate ATP, the sodium-potassium pump fails, leading
to cellular swelling, calcium influx, and eventual cell death. Common causes include ischemia,
anemia, and respiratory failure.
5. What is the sequence of cellular events in reversible cell injury?
A. Necrosis, inflammation, repair
B. Cellular swelling, fatty change, reversal with removal of cause
C. Apoptosis, phagocytosis, regeneration
D. Metaplasia, dysplasia, neoplasia
Correct Answer: B. Cellular swelling, fatty change, reversal with removal of cause
Rationale: Reversible cell injury begins with cellular swelling due to ATP depletion and failure of
the sodium-potassium pump. Fatty change may occur in organs involved in lipid metabolism. If the
injurious stimulus is removed, these changes can reverse. If injury persists, irreversible injury and
cell death occur.
6. Which type of necrosis is characteristic of brain tissue injury?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fat necrosis
Correct Answer: B. Liquefactive necrosis
Rationale: Liquefactive necrosis occurs in brain tissue due to the high lipid content and lack of
connective tissue framework. Enzymatic digestion predominates, resulting in a liquid mass. This
also occurs in bacterial infections where neutrophils release enzymes, causing abscess formation.
7. What is the primary difference between apoptosis and necrosis?
A. Apoptosis is pathological; necrosis is physiological
B. Apoptosis is programmed cell death without inflammation; necrosis is
uncontrolled death with inflammation
C. Necrosis requires energy; apoptosis does not
D. They are identical processes
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PN2003 VARIATIONS IN HEALTH & ILLNESS
MIDTERM EXAMINATION STUDY GUIDE
2026/2027 | 60 Practice Questions | Verified Answers | Graded A+
Core Domains: Pathophysiology Across the Lifespan, Cellular Adaptation & Injury,
Inflammation & Healing, Fluid & Electrolyte Imbalances, Acid-Base Disorders,
Genetics & Genetic Disorders, Immune System Dysfunction, Infectious Disease Processes,
Neoplasia & Cancer Biology, Stress & Coping Mechanisms | Nursing Education Focus
Introduction
This PN2003 Variations in Health & Illness Midterm Exam document for the 2026/2027 academic
cycle reflects the official nursing curriculum requirements for understanding variations in health
across the lifespan. The examination evaluates comprehensive knowledge of pathophysiologic
processes, disease mechanisms, and clinical manifestations essential for nursing assessment,
intervention, and patient education. Each question includes detailed rationales that reinforce
pathophysiologic principles, diagnostic reasoning, and evidence-based nursing practice.
Answer Format
All correct answers are presented in bold and green. Each question appears in bold, with rationales
in italic font that reinforce pathophysiologic principles and clinical reasoning.
CELLULAR ADAPTATION & INJURY
1. A patient with chronic hypertension develops left ventricular hypertrophy. Which
cellular adaptation is this?
A. Atrophy
B. Hypertrophy
C. Hyperplasia
D. Metaplasia
Correct Answer: B. Hypertrophy
Rationale: Hypertrophy is an increase in cell size due to increased workload or stress. In
hypertension, the left ventricle must work harder against elevated systemic resistance, leading to
enlarged cardiac myocytes. This is a reversible adaptive response initially, but prolonged
hypertrophy can progress to heart failure.
2. Which type of cellular adaptation involves a change from one mature cell type to
another?
A. Dysplasia
B. Metaplasia
C. Hyperplasia
D. Hypertrophy
Correct Answer: B. Metaplasia
Rationale: Metaplasia is the reversible replacement of one mature cell type with another mature
cell type, usually in response to chronic irritation. A common example is the change from ciliated
columnar epithelium to stratified squamous epithelium in the trachea of chronic smokers. This
adaptation may increase resistance to stress but can lead to malignancy.
Page 1 of 15
, PN2003 Variations Midterm Exam Study Guide
3. A biopsy shows disorganized, abnormal cell growth with atypical features. Which
cellular adaptation does this represent?
A. Metaplasia
B. Hyperplasia
C. Dysplasia
D. Hypertrophy
Correct Answer: C. Dysplasia
Rationale: Dysplasia refers to disordered, atypical cellular growth with changes in size, shape,
and organization. It is considered a pre-neoplastic condition that may progress to cancer.
Dysplastic cells show loss of polarity, increased nuclear-to-cytoplasmic ratio, and mitotic figures.
Unlike hyperplasia, dysplasia is not an adaptive response.
4. Which cellular injury results from inadequate oxygen supply to tissues?
A. Chemical injury
B. Hypoxic injury
C. Immunologic injury
D. Physical injury
Correct Answer: B. Hypoxic injury
Rationale: Hypoxic injury occurs when cells receive insufficient oxygen, impairing aerobic
metabolism and ATP production. Without adequate ATP, the sodium-potassium pump fails, leading
to cellular swelling, calcium influx, and eventual cell death. Common causes include ischemia,
anemia, and respiratory failure.
5. What is the sequence of cellular events in reversible cell injury?
A. Necrosis, inflammation, repair
B. Cellular swelling, fatty change, reversal with removal of cause
C. Apoptosis, phagocytosis, regeneration
D. Metaplasia, dysplasia, neoplasia
Correct Answer: B. Cellular swelling, fatty change, reversal with removal of cause
Rationale: Reversible cell injury begins with cellular swelling due to ATP depletion and failure of
the sodium-potassium pump. Fatty change may occur in organs involved in lipid metabolism. If the
injurious stimulus is removed, these changes can reverse. If injury persists, irreversible injury and
cell death occur.
6. Which type of necrosis is characteristic of brain tissue injury?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fat necrosis
Correct Answer: B. Liquefactive necrosis
Rationale: Liquefactive necrosis occurs in brain tissue due to the high lipid content and lack of
connective tissue framework. Enzymatic digestion predominates, resulting in a liquid mass. This
also occurs in bacterial infections where neutrophils release enzymes, causing abscess formation.
7. What is the primary difference between apoptosis and necrosis?
A. Apoptosis is pathological; necrosis is physiological
B. Apoptosis is programmed cell death without inflammation; necrosis is
uncontrolled death with inflammation
C. Necrosis requires energy; apoptosis does not
D. They are identical processes
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