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ORIGINAL PRACTICE BANK: WGU D236
OBJECTIVE ASSESSMENT
PATHOPHYSIOLOGY — QUESTIONS 1–
100 AND ANSWERS, 2026/2027 |
DETAILED RATIONALES | INSTANT
STUDY RESOURCE
Introduction
WGU D236 Pathophysiology focuses on understanding how diseases and injuries disrupt normal
physiological processes, how those disruptions produce clinical manifestations, and how
underlying mechanisms help explain patient findings. This practice bank is designed for students
preparing for a pathophysiology objective assessment who want to strengthen clinical reasoning
rather than simply memorize definitions.
The questions emphasize application-level scenarios involving cellular injury, inflammation,
immune responses, genetic disorders, fluid and electrolyte imbalances, cardiovascular and
respiratory conditions, renal dysfunction, endocrine disorders, neurological disease, and other
major disease processes. Each question has four answer choices, one best answer, and a rationale
explaining why the correct option fits the scenario and why the alternatives do not.
Use this resource alongside your course materials and current study guide. First answer each
question without checking the rationale; then review any missed items and explain the
underlying mechanism in your own words. This approach can help reveal knowledge gaps and
improve retention before your assessment. These are original study questions, not official WGU
assessment items, and they do not guarantee a particular exam result.
Content area overview
1. Cellular adaptation, injury, and death
Cell stress, atrophy, hypertrophy, metaplasia, apoptosis, necrosis, and oxidative injury.
2. Inflammation, immunity, and infection
Acute and chronic inflammation, immune dysfunction, hypersensitivity, autoimmunity, and
infectious processes.
3. Genetics and neoplasia
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Inheritance, mutations, cancer development, tumor behavior, and metastasis.
4. Cardiovascular and hematologic disorders
Perfusion, ischemia, heart failure, hypertension, anemia, and coagulation abnormalities.
5. Respiratory disorders
Ventilation, gas exchange, obstructive disease, restrictive disease, and respiratory failure.
6. Renal, fluid, electrolyte, and acid–base disorders
Filtration, acute kidney injury, sodium and potassium imbalances, and acid–base regulation.
7. Neurological and musculoskeletal disorders
Neuronal injury, seizures, neurodegeneration, neuromuscular dysfunction, and bone disease.
8. Endocrine, gastrointestinal, and other systemic disorders
Hormonal dysfunction, diabetes, gastrointestinal disease, liver dysfunction, and systemic
consequences of disease.
Study distribution below is a suggested practice allocation, not an official WGU exam blueprint.
Content area Questions Key topics Weight
Cellular injury 1–12 Adaptation, necrosis, apoptosis 12%
Inflammation, infection, immune
Inflammation and immunity 13–24 12%
responses
Genetics and cancer 25–34 Mutations, inheritance, neoplasia 10%
Cardiovascular and blood 35–47 Perfusion, heart failure, anemia 13%
Respiratory 48–57 Ventilation, gas exchange, failure 10%
Renal and acid–base 58–69 Filtration, electrolytes, pH 12%
Neurological and
70–79 Neuronal injury, seizures, bone 10%
musculoskeletal
Endocrine 80–89 Diabetes, thyroid, adrenal function 10%
GI, hepatic, and systemic 90–100 Digestion, liver, multisystem effects 11%
QUESTIONS 1–100
Q1: A patient with longstanding hypertension develops increased left ventricular
wall thickness. The cardiac muscle cells are enlarged, but the number of
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cardiomyocytes has not significantly increased. Which cellular adaptation best
explains this finding?
A) Hyperplasia
B) Hypertrophy
C) Metaplasia
D) Dysplasia
Rationale: B is correct because hypertrophy is an increase in individual cell size caused by
increased workload, resulting in enlargement of the affected organ. Chronic hypertension
increases the resistance against which the left ventricle must pump. A is incorrect because
hyperplasia involves an increase in cell number, which is not the primary response of adult
cardiomyocytes. C is incorrect because metaplasia is the replacement of one differentiated cell
type by another. D is incorrect because dysplasia involves disordered cellular growth and
maturation, often associated with precancerous changes.
Q2: A patient experiences several minutes of severe coronary artery obstruction.
Blood flow is restored before irreversible myocardial damage occurs. Which
mechanism most directly explains why some injured cells may recover?
A) Permanent disruption of the plasma membrane
B) Complete depletion of cellular DNA
C) Extensive lysosomal rupture
D) Restoration of ATP production and ionic homeostasis
Rationale: D is correct because reversible cell injury may involve reduced ATP production,
impaired ion pumps, and cellular swelling. If oxygen delivery returns before severe membrane
and mitochondrial damage becomes irreversible, ATP production and ionic balance may
recover. A is incorrect because major irreversible membrane disruption is characteristic of cell
death. B is incorrect because complete DNA depletion is not the mechanism of reversible injury.
C is incorrect because extensive lysosomal rupture releases destructive enzymes and favors
irreversible injury.
Q3: A biopsy reveals cells with fragmented nuclei, condensed chromatin, and
membrane-bound fragments that are rapidly removed by phagocytes without a
substantial inflammatory response. Which process is most likely occurring?
A) Coagulative necrosis
B) Liquefactive necrosis
C) Apoptosis
D) Caseous necrosis
Rationale: C is correct because apoptosis is programmed cell death involving cellular
shrinkage, chromatin condensation, nuclear fragmentation, and apoptotic bodies. These bodies
are usually cleared without provoking significant inflammation. A is incorrect because
, 4|Page
coagulative necrosis preserves tissue architecture temporarily and commonly follows ischemia
in solid organs. B is incorrect because liquefactive necrosis involves enzymatic digestion of
tissue, as seen in brain infarction and abscesses. D is incorrect because caseous necrosis
produces a cheese-like appearance, classically associated with tuberculosis.
Q4: A patient develops a cerebral infarction after interruption of blood flow to
part of the brain. Which type of necrosis is most characteristic of the affected
brain tissue?
A) Coagulative necrosis
B) Liquefactive necrosis
C) Fat necrosis
D) Fibrinoid necrosis
Rationale: B is correct because brain infarctions characteristically undergo liquefactive
necrosis, in which enzymatic digestion transforms dead tissue into a softened, liquid mass. A is
incorrect because coagulative necrosis is typical of ischemic injury in many solid organs,
including the heart and kidneys, but not the brain. C is incorrect because fat necrosis involves
destruction of adipose tissue, often in pancreatitis or trauma. D is incorrect because fibrinoid
necrosis is associated with immune-mediated or severe vascular injury.
Q5: A patient with severe ischemia develops a rapid rise in intracellular calcium.
Which consequence most directly contributes to irreversible cellular damage?
A) Increased synthesis of normal membrane phospholipids
B) Suppression of all proteolytic activity
C) Increased efficiency of mitochondrial ATP generation
D) Activation of phospholipases, proteases, and endonucleases
Rationale: D is correct because excessive intracellular calcium activates enzymes that damage
cell membranes, cytoskeletal proteins, and DNA. Mitochondrial dysfunction and ATP depletion
further worsen the injury. A is incorrect because ischemic injury impairs membrane maintenance
rather than promoting normal repair. B is incorrect because calcium activates, rather than
universally suppresses, destructive enzymes. C is incorrect because ischemia and calcium
overload impair mitochondrial function and ATP generation.
Q6: A patient with chronic gastroesophageal reflux develops replacement of
normal esophageal squamous epithelium with intestinal-type columnar
epithelium. Which process has occurred?
A) Hypertrophy
B) Hyperplasia alone
C) Metaplasia
D) Physiological apoptosis
ORIGINAL PRACTICE BANK: WGU D236
OBJECTIVE ASSESSMENT
PATHOPHYSIOLOGY — QUESTIONS 1–
100 AND ANSWERS, 2026/2027 |
DETAILED RATIONALES | INSTANT
STUDY RESOURCE
Introduction
WGU D236 Pathophysiology focuses on understanding how diseases and injuries disrupt normal
physiological processes, how those disruptions produce clinical manifestations, and how
underlying mechanisms help explain patient findings. This practice bank is designed for students
preparing for a pathophysiology objective assessment who want to strengthen clinical reasoning
rather than simply memorize definitions.
The questions emphasize application-level scenarios involving cellular injury, inflammation,
immune responses, genetic disorders, fluid and electrolyte imbalances, cardiovascular and
respiratory conditions, renal dysfunction, endocrine disorders, neurological disease, and other
major disease processes. Each question has four answer choices, one best answer, and a rationale
explaining why the correct option fits the scenario and why the alternatives do not.
Use this resource alongside your course materials and current study guide. First answer each
question without checking the rationale; then review any missed items and explain the
underlying mechanism in your own words. This approach can help reveal knowledge gaps and
improve retention before your assessment. These are original study questions, not official WGU
assessment items, and they do not guarantee a particular exam result.
Content area overview
1. Cellular adaptation, injury, and death
Cell stress, atrophy, hypertrophy, metaplasia, apoptosis, necrosis, and oxidative injury.
2. Inflammation, immunity, and infection
Acute and chronic inflammation, immune dysfunction, hypersensitivity, autoimmunity, and
infectious processes.
3. Genetics and neoplasia
,2|Page
Inheritance, mutations, cancer development, tumor behavior, and metastasis.
4. Cardiovascular and hematologic disorders
Perfusion, ischemia, heart failure, hypertension, anemia, and coagulation abnormalities.
5. Respiratory disorders
Ventilation, gas exchange, obstructive disease, restrictive disease, and respiratory failure.
6. Renal, fluid, electrolyte, and acid–base disorders
Filtration, acute kidney injury, sodium and potassium imbalances, and acid–base regulation.
7. Neurological and musculoskeletal disorders
Neuronal injury, seizures, neurodegeneration, neuromuscular dysfunction, and bone disease.
8. Endocrine, gastrointestinal, and other systemic disorders
Hormonal dysfunction, diabetes, gastrointestinal disease, liver dysfunction, and systemic
consequences of disease.
Study distribution below is a suggested practice allocation, not an official WGU exam blueprint.
Content area Questions Key topics Weight
Cellular injury 1–12 Adaptation, necrosis, apoptosis 12%
Inflammation, infection, immune
Inflammation and immunity 13–24 12%
responses
Genetics and cancer 25–34 Mutations, inheritance, neoplasia 10%
Cardiovascular and blood 35–47 Perfusion, heart failure, anemia 13%
Respiratory 48–57 Ventilation, gas exchange, failure 10%
Renal and acid–base 58–69 Filtration, electrolytes, pH 12%
Neurological and
70–79 Neuronal injury, seizures, bone 10%
musculoskeletal
Endocrine 80–89 Diabetes, thyroid, adrenal function 10%
GI, hepatic, and systemic 90–100 Digestion, liver, multisystem effects 11%
QUESTIONS 1–100
Q1: A patient with longstanding hypertension develops increased left ventricular
wall thickness. The cardiac muscle cells are enlarged, but the number of
,3|Page
cardiomyocytes has not significantly increased. Which cellular adaptation best
explains this finding?
A) Hyperplasia
B) Hypertrophy
C) Metaplasia
D) Dysplasia
Rationale: B is correct because hypertrophy is an increase in individual cell size caused by
increased workload, resulting in enlargement of the affected organ. Chronic hypertension
increases the resistance against which the left ventricle must pump. A is incorrect because
hyperplasia involves an increase in cell number, which is not the primary response of adult
cardiomyocytes. C is incorrect because metaplasia is the replacement of one differentiated cell
type by another. D is incorrect because dysplasia involves disordered cellular growth and
maturation, often associated with precancerous changes.
Q2: A patient experiences several minutes of severe coronary artery obstruction.
Blood flow is restored before irreversible myocardial damage occurs. Which
mechanism most directly explains why some injured cells may recover?
A) Permanent disruption of the plasma membrane
B) Complete depletion of cellular DNA
C) Extensive lysosomal rupture
D) Restoration of ATP production and ionic homeostasis
Rationale: D is correct because reversible cell injury may involve reduced ATP production,
impaired ion pumps, and cellular swelling. If oxygen delivery returns before severe membrane
and mitochondrial damage becomes irreversible, ATP production and ionic balance may
recover. A is incorrect because major irreversible membrane disruption is characteristic of cell
death. B is incorrect because complete DNA depletion is not the mechanism of reversible injury.
C is incorrect because extensive lysosomal rupture releases destructive enzymes and favors
irreversible injury.
Q3: A biopsy reveals cells with fragmented nuclei, condensed chromatin, and
membrane-bound fragments that are rapidly removed by phagocytes without a
substantial inflammatory response. Which process is most likely occurring?
A) Coagulative necrosis
B) Liquefactive necrosis
C) Apoptosis
D) Caseous necrosis
Rationale: C is correct because apoptosis is programmed cell death involving cellular
shrinkage, chromatin condensation, nuclear fragmentation, and apoptotic bodies. These bodies
are usually cleared without provoking significant inflammation. A is incorrect because
, 4|Page
coagulative necrosis preserves tissue architecture temporarily and commonly follows ischemia
in solid organs. B is incorrect because liquefactive necrosis involves enzymatic digestion of
tissue, as seen in brain infarction and abscesses. D is incorrect because caseous necrosis
produces a cheese-like appearance, classically associated with tuberculosis.
Q4: A patient develops a cerebral infarction after interruption of blood flow to
part of the brain. Which type of necrosis is most characteristic of the affected
brain tissue?
A) Coagulative necrosis
B) Liquefactive necrosis
C) Fat necrosis
D) Fibrinoid necrosis
Rationale: B is correct because brain infarctions characteristically undergo liquefactive
necrosis, in which enzymatic digestion transforms dead tissue into a softened, liquid mass. A is
incorrect because coagulative necrosis is typical of ischemic injury in many solid organs,
including the heart and kidneys, but not the brain. C is incorrect because fat necrosis involves
destruction of adipose tissue, often in pancreatitis or trauma. D is incorrect because fibrinoid
necrosis is associated with immune-mediated or severe vascular injury.
Q5: A patient with severe ischemia develops a rapid rise in intracellular calcium.
Which consequence most directly contributes to irreversible cellular damage?
A) Increased synthesis of normal membrane phospholipids
B) Suppression of all proteolytic activity
C) Increased efficiency of mitochondrial ATP generation
D) Activation of phospholipases, proteases, and endonucleases
Rationale: D is correct because excessive intracellular calcium activates enzymes that damage
cell membranes, cytoskeletal proteins, and DNA. Mitochondrial dysfunction and ATP depletion
further worsen the injury. A is incorrect because ischemic injury impairs membrane maintenance
rather than promoting normal repair. B is incorrect because calcium activates, rather than
universally suppresses, destructive enzymes. C is incorrect because ischemia and calcium
overload impair mitochondrial function and ATP generation.
Q6: A patient with chronic gastroesophageal reflux develops replacement of
normal esophageal squamous epithelium with intestinal-type columnar
epithelium. Which process has occurred?
A) Hypertrophy
B) Hyperplasia alone
C) Metaplasia
D) Physiological apoptosis
