WGU Pathophysiology D236
Latest Comprehensive Questions Bank
Aligned with 2026 Curriculum Standards
Western Governors University | Nursing & Health Sciences
Pathophysiology, Disease Mechanisms, and Clinical Manifestations
Exam Composition: 150 multiple-choice questions distributed across five content domains.
Cognitive level distribution: 30% recall, 50% application, 20% analysis. Approximately 75% of
items are scenario-based (patient presentations, laboratory value interpretations, and
pathophysiologic cascades), with 25% direct (definitions, cellular mechanisms). Each item
includes four options (A-D), one correct answer, and a concise rationale explaining why the
correct option is best and why the distractors are incorrect.
Contents
Section 1: Cellular Adaptation, Injury, and Death (Q1-Q25)
Section 2: Immunity, Inflammation, and Infection (Q26-Q50)
Section 3: Cardiovascular, Respiratory, and Renal Disorders (Q51-Q90)
Section 4: Endocrine, Neurological, and Gastrointestinal Disorders (Q91-Q130)
Section 5: Genetics, Cancer, and Reproductive Disorders (Q131-Q150)
WGU Pathophysiology D236 - Comprehensive Exam Bank (2026) Page 1
, Section 1: Cellular Adaptation, Injury, and Death
Items 1-25 focus on cellular adaptation (hypertrophy, hyperplasia, atrophy, metaplasia, dysplasia), mechanisms
of reversible and irreversible cell injury, hypoxia, free radical injury, calcium-mediated injury, and the spectrum
of cell death (apoptosis, necrosis variants, autophagy).
Q1: A 68-year-old male with long-standing hypertension has an echocardiogram showing increased
left ventricular wall thickness without an increase in chamber size. Which cellular adaptation best
explains this finding?
A. Hyperplasia from increased cell number
B. Hypertrophy from increased cell size in response to pressure overload [CORRECT]
C. Metaplasia from chronic irritation
D. Atrophy from reduced workload
Correct Answer: B
Rationale: Pressure overload from chronic hypertension forces ventricular myocytes to increase in size
(hypertrophy) to generate greater contractile force; hyperplasia is rare in terminally differentiated cardiac
muscle, and metaplasia/atrophy do not match this stimulus.
Q2: A patient who has donated 60% of his liver undergoes partial hepatectomy. Within 6-8 weeks the
liver regrows to near-original size. Which adaptive mechanism is primarily responsible?
A. Compensatory hyperplasia of remaining hepatocytes [CORRECT]
B. Hypertrophy of existing Kupffer cells
C. Metaplasia of bile duct epithelium
D. Dysplastic proliferation of stellate cells
Correct Answer: A
Rationale: The liver retains mitotic capacity, so lost tissue is restored through compensatory hyperplasia
(increased cell number); hypertrophy alone would increase cell size without restoring mass, and
metaplasia/dysplasia are abnormal reprogramming events.
Q3: A 45-year-old woman has her arm in a cast for 8 weeks after a fracture. Upon removal, the
forearm muscles are visibly smaller and weaker. Which cellular mechanism underlies this change?
A. Decreased protein synthesis and increased proteasomal degradation [CORRECT]
B. Increased ribosomal biogenesis
C. Activation of caspase-3-mediated apoptosis
D. Squamous metaplasia of myocytes
Correct Answer: A
Rationale: Disuse atrophy results from reduced trophic signaling that downregulates protein synthesis and
upregulates ubiquitin-proteasome degradation; apoptosis and metaplasia are not the primary drivers of
reversible disuse atrophy.
WGU Pathophysiology D236 - Comprehensive Exam Bank (2026) Page 2
, Q4: A 52-year-old man with chronic gastroesophageal reflux undergoes endoscopy. Biopsy of the
distal esophagus reveals columnar epithelium replacing the normal squamous epithelium. What is the
most accurate description of this change?
A. Dysplasia with atypical mitoses
B. Squamous metaplasia progressing to carcinoma in situ
C. Columnar metaplasia (Barrett esophagus), a reversible adaptive substitution [CORRECT]
D. Hypertrophy of squamous epithelium
Correct Answer: C
Rationale: Chronic acid exposure induces reprogramming of esophageal stem cells toward an intestinal
columnar phenotype (Barrett metaplasia), an adaptive substitution rather than dysplasia, which would imply
cytologic atypia.
Q5: A routine Pap smear from a 31-year-old woman shows disordered, hyperchromatic cells with
increased nuclear-to-cytoplasmic ratio and loss of polarity, but no invasion through the basement
membrane. This finding represents:
A. Metaplasia only
B. Mild dysplasia (cervical intraepithelial neoplasia) [CORRECT]
C. Reactive atrophy
D. Coagulative necrosis
Correct Answer: B
Rationale: Dysplasia is characterized by disorderly proliferation, pleomorphism, and hyperchromasia without
basement membrane invasion; metaplasia alone lacks cytologic atypia, and necrosis is cell death, not
proliferation.
Q6: Which cellular process is best described as programmed, energy-dependent cell death that does
not elicit significant inflammation?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Apoptosis [CORRECT]
D. Fibrinoid necrosis
Correct Answer: C
Rationale: Apoptosis is ATP-dependent, neatly packaged cell death via caspases that produces apoptotic bodies
rapidly phagocytosed without inflammation; the necrosis variants provoke inflammatory responses and are not
energy-dependent.
WGU Pathophysiology D236 - Comprehensive Exam Bank (2026) Page 3
, Q7: A 60-year-old man dies of myocardial infarction. At autopsy, the myocardium shows firm, pale,
wedge-shaped lesions with preserved cell outlines. This pattern is classic for:
A. Liquefactive necrosis
B. Coagulative necrosis [CORRECT]
C. Caseous necrosis
D. Fat necrosis
Correct Answer: B
Rationale: Coagulative necrosis, typical of ischemic injury in most solid organs, preserves tissue architecture via
protein denaturation; liquefactive necrosis destroys architecture (common in brain), and caseous/fat necrosis
have distinct gross appearances.
Q8: An 82-year-old woman suffers a thromboembolic stroke. Three days later, the infarcted brain
tissue is soft and liquefied. Which form of necrosis explains this?
A. Coagulative necrosis
B. Liquefactive necrosis [CORRECT]
C. Caseous necrosis
D. Gangrenous necrosis
Correct Answer: B
Rationale: The brain lacks substantial connective tissue, so ischemic injury releases lysosomal enzymes that
digest tissue into a liquid cavity (liquefactive necrosis); coagulative necrosis is typical of non-neural ischemic
solid organs.
Q9: A 35-year-old man with active pulmonary tuberculosis has a cavity in the upper lobe containing
cheese-like white debris. Histologically this material is amorphous granular debris surrounded by
granulomatous inflammation. The diagnosis is:
A. Fat necrosis
B. Caseous necrosis [CORRECT]
C. Fibrinoid necrosis
D. Gummatous necrosis
Correct Answer: B
Rationale: Caseous necrosis ("cheese-like") is a distinctive form of coagulative necrosis seen in tuberculosis
where mycobacterial cell walls provoke granulomatous inflammation; fat necrosis involves saponification, and
fibrinoid necrosis affects vessel walls.
Q10: A 48-year-old man with acute pancreatitis develops saponification of peripancreatic fat with
chalky white deposits. Which pathologic process has occurred?
A. Fat necrosis from pancreatic lipase release [CORRECT]
B. Caseous necrosis from TB
C. Liquefactive necrosis from ischemia
D. Fibrinoid necrosis of vessels
Correct Answer: A
Rationale: Activated pancreatic lipases digest triglycerides into fatty acids that complex with calcium to form
soaps (saponification), producing fat necrosis; the other necrosis types arise from different mechanisms.
WGU Pathophysiology D236 - Comprehensive Exam Bank (2026) Page 4
Latest Comprehensive Questions Bank
Aligned with 2026 Curriculum Standards
Western Governors University | Nursing & Health Sciences
Pathophysiology, Disease Mechanisms, and Clinical Manifestations
Exam Composition: 150 multiple-choice questions distributed across five content domains.
Cognitive level distribution: 30% recall, 50% application, 20% analysis. Approximately 75% of
items are scenario-based (patient presentations, laboratory value interpretations, and
pathophysiologic cascades), with 25% direct (definitions, cellular mechanisms). Each item
includes four options (A-D), one correct answer, and a concise rationale explaining why the
correct option is best and why the distractors are incorrect.
Contents
Section 1: Cellular Adaptation, Injury, and Death (Q1-Q25)
Section 2: Immunity, Inflammation, and Infection (Q26-Q50)
Section 3: Cardiovascular, Respiratory, and Renal Disorders (Q51-Q90)
Section 4: Endocrine, Neurological, and Gastrointestinal Disorders (Q91-Q130)
Section 5: Genetics, Cancer, and Reproductive Disorders (Q131-Q150)
WGU Pathophysiology D236 - Comprehensive Exam Bank (2026) Page 1
, Section 1: Cellular Adaptation, Injury, and Death
Items 1-25 focus on cellular adaptation (hypertrophy, hyperplasia, atrophy, metaplasia, dysplasia), mechanisms
of reversible and irreversible cell injury, hypoxia, free radical injury, calcium-mediated injury, and the spectrum
of cell death (apoptosis, necrosis variants, autophagy).
Q1: A 68-year-old male with long-standing hypertension has an echocardiogram showing increased
left ventricular wall thickness without an increase in chamber size. Which cellular adaptation best
explains this finding?
A. Hyperplasia from increased cell number
B. Hypertrophy from increased cell size in response to pressure overload [CORRECT]
C. Metaplasia from chronic irritation
D. Atrophy from reduced workload
Correct Answer: B
Rationale: Pressure overload from chronic hypertension forces ventricular myocytes to increase in size
(hypertrophy) to generate greater contractile force; hyperplasia is rare in terminally differentiated cardiac
muscle, and metaplasia/atrophy do not match this stimulus.
Q2: A patient who has donated 60% of his liver undergoes partial hepatectomy. Within 6-8 weeks the
liver regrows to near-original size. Which adaptive mechanism is primarily responsible?
A. Compensatory hyperplasia of remaining hepatocytes [CORRECT]
B. Hypertrophy of existing Kupffer cells
C. Metaplasia of bile duct epithelium
D. Dysplastic proliferation of stellate cells
Correct Answer: A
Rationale: The liver retains mitotic capacity, so lost tissue is restored through compensatory hyperplasia
(increased cell number); hypertrophy alone would increase cell size without restoring mass, and
metaplasia/dysplasia are abnormal reprogramming events.
Q3: A 45-year-old woman has her arm in a cast for 8 weeks after a fracture. Upon removal, the
forearm muscles are visibly smaller and weaker. Which cellular mechanism underlies this change?
A. Decreased protein synthesis and increased proteasomal degradation [CORRECT]
B. Increased ribosomal biogenesis
C. Activation of caspase-3-mediated apoptosis
D. Squamous metaplasia of myocytes
Correct Answer: A
Rationale: Disuse atrophy results from reduced trophic signaling that downregulates protein synthesis and
upregulates ubiquitin-proteasome degradation; apoptosis and metaplasia are not the primary drivers of
reversible disuse atrophy.
WGU Pathophysiology D236 - Comprehensive Exam Bank (2026) Page 2
, Q4: A 52-year-old man with chronic gastroesophageal reflux undergoes endoscopy. Biopsy of the
distal esophagus reveals columnar epithelium replacing the normal squamous epithelium. What is the
most accurate description of this change?
A. Dysplasia with atypical mitoses
B. Squamous metaplasia progressing to carcinoma in situ
C. Columnar metaplasia (Barrett esophagus), a reversible adaptive substitution [CORRECT]
D. Hypertrophy of squamous epithelium
Correct Answer: C
Rationale: Chronic acid exposure induces reprogramming of esophageal stem cells toward an intestinal
columnar phenotype (Barrett metaplasia), an adaptive substitution rather than dysplasia, which would imply
cytologic atypia.
Q5: A routine Pap smear from a 31-year-old woman shows disordered, hyperchromatic cells with
increased nuclear-to-cytoplasmic ratio and loss of polarity, but no invasion through the basement
membrane. This finding represents:
A. Metaplasia only
B. Mild dysplasia (cervical intraepithelial neoplasia) [CORRECT]
C. Reactive atrophy
D. Coagulative necrosis
Correct Answer: B
Rationale: Dysplasia is characterized by disorderly proliferation, pleomorphism, and hyperchromasia without
basement membrane invasion; metaplasia alone lacks cytologic atypia, and necrosis is cell death, not
proliferation.
Q6: Which cellular process is best described as programmed, energy-dependent cell death that does
not elicit significant inflammation?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Apoptosis [CORRECT]
D. Fibrinoid necrosis
Correct Answer: C
Rationale: Apoptosis is ATP-dependent, neatly packaged cell death via caspases that produces apoptotic bodies
rapidly phagocytosed without inflammation; the necrosis variants provoke inflammatory responses and are not
energy-dependent.
WGU Pathophysiology D236 - Comprehensive Exam Bank (2026) Page 3
, Q7: A 60-year-old man dies of myocardial infarction. At autopsy, the myocardium shows firm, pale,
wedge-shaped lesions with preserved cell outlines. This pattern is classic for:
A. Liquefactive necrosis
B. Coagulative necrosis [CORRECT]
C. Caseous necrosis
D. Fat necrosis
Correct Answer: B
Rationale: Coagulative necrosis, typical of ischemic injury in most solid organs, preserves tissue architecture via
protein denaturation; liquefactive necrosis destroys architecture (common in brain), and caseous/fat necrosis
have distinct gross appearances.
Q8: An 82-year-old woman suffers a thromboembolic stroke. Three days later, the infarcted brain
tissue is soft and liquefied. Which form of necrosis explains this?
A. Coagulative necrosis
B. Liquefactive necrosis [CORRECT]
C. Caseous necrosis
D. Gangrenous necrosis
Correct Answer: B
Rationale: The brain lacks substantial connective tissue, so ischemic injury releases lysosomal enzymes that
digest tissue into a liquid cavity (liquefactive necrosis); coagulative necrosis is typical of non-neural ischemic
solid organs.
Q9: A 35-year-old man with active pulmonary tuberculosis has a cavity in the upper lobe containing
cheese-like white debris. Histologically this material is amorphous granular debris surrounded by
granulomatous inflammation. The diagnosis is:
A. Fat necrosis
B. Caseous necrosis [CORRECT]
C. Fibrinoid necrosis
D. Gummatous necrosis
Correct Answer: B
Rationale: Caseous necrosis ("cheese-like") is a distinctive form of coagulative necrosis seen in tuberculosis
where mycobacterial cell walls provoke granulomatous inflammation; fat necrosis involves saponification, and
fibrinoid necrosis affects vessel walls.
Q10: A 48-year-old man with acute pancreatitis develops saponification of peripancreatic fat with
chalky white deposits. Which pathologic process has occurred?
A. Fat necrosis from pancreatic lipase release [CORRECT]
B. Caseous necrosis from TB
C. Liquefactive necrosis from ischemia
D. Fibrinoid necrosis of vessels
Correct Answer: A
Rationale: Activated pancreatic lipases digest triglycerides into fatty acids that complex with calcium to form
soaps (saponification), producing fat necrosis; the other necrosis types arise from different mechanisms.
WGU Pathophysiology D236 - Comprehensive Exam Bank (2026) Page 4
