WGU D027 Pathophysiology and Pharmacology Exam 2026/2027 (Verified Answers) Western Governors University
WGU D027 Pathophysiology and Pharmacology Exam
2026/2027
140 Verified Questions & Answers — Aligned with the WGU D027 Objective Assessment Competency
Blueprint
Generated: September 21, 2026 | Format: Multiple Choice (4 options, one correct) | Total Items: 140
Section Topic Coverage Items
Section 1 Cellular Function, Injury, and Adaptation Q1–Q14
Section 2 Genetics, Inflammation, and Immunity Q15–Q30
Section 3 Infection, Fluid, Electrolytes, and Acid-Base Q31–Q48
Section 4 Cardiovascular and Hematologic Pathophysiology and Pharmacology Q49–Q72
Section 5 Respiratory and Renal Pathophysiology and Pharmacology Q73–Q92
Section 6 Neurologic, Musculoskeletal, and Sensory Pathophysiology and Pharmacology Q93–Q110
Section 7 Endocrine and Gastrointestinal Pathophysiology and Pharmacology Q111–Q128
Section 8 Oncology, Pain Management, and Pharmacologic Principles Q129–Q140
Directions: This practice exam mirrors the rigor and content coverage of the WGU D027 Pathophysiology and
Pharmacology Objective Assessment. Each of the 140 multiple-choice items presents four options (A–D) with
exactly one correct response. Items are calibrated to a cognitive distribution of approximately 30% recall, 50%
application, and 20% analysis. Approximately 75% of items are scenario-based, requiring integration of
pathophysiologic mechanisms with pharmacologic principles, medication-to-pathophysiology matching, adverse
effect recognition tied to drug mechanisms, and clinical judgment for nursing priority decisions. Approximately
25% assess direct recall of pathophysiologic concepts and pharmacologic principles. Coverage spans all WGU
D027 competency domains: cellular injury and adaptation; genetics, inflammation, and immunity; infection and
fluid/electrolyte/acid-base; cardiovascular and hematologic pathophysiology and pharmacology; respiratory and
renal; neurologic, musculoskeletal, and sensory; endocrine and gastrointestinal; and oncology, pain management,
and pharmacologic principles. After each item, the correct answer and a 2–4 sentence rationale are provided,
integrating disease mechanisms, drug mechanisms of action, clinical manifestations, nursing considerations, and
verification against WGU D027 course materials.
Integrated Pathophysiology & Pharmacology | Cognitive Levels: 30% Recall / 50% Application / 20% Analysis Page 1
,WGU D027 Pathophysiology and Pharmacology Exam 2026/2027 (Verified Answers) Western Governors University
Section 1: Cellular Function, Injury, and Adaptation
Cell Structure, Injury Mechanisms, Necrosis, Apoptosis, Atrophy, Hypertrophy, Hyperplasia, Metaplasia, and
Dysplasia | Items Q1–Q14
Q1.
A 65-year-old long-term smoker undergoes bronchoscopy. Biopsy of the bronchial epithelium reveals replacement
of normal columnar ciliated epithelium with stratified squamous epithelium. This cellular adaptation is best
described as:
A. Hypertrophy, due to increased cell size in response to mechanical stress
B. Metaplasia, the reversible replacement of one differentiated cell type with another more resistant to
chronic irritation [CORRECT]
C. Dysplasia, characterized by disordered cellular growth and atypia
D. Hyperplasia, an increase in the number of cells in a tissue
Correct Answer: B
Rationale: Metaplasia is the reversible replacement of one adult cell type with another, often occurring in response to
chronic irritation such as smoking. The squamous epithelium is more resistant to injury but loses ciliary function,
predisposing to infection. Hypertrophy involves increased cell size (e.g., cardiac muscle in hypertension), dysplasia
involves disordered atypical growth (a precancerous change), and hyperplasia is an increase in cell number (e.g.,
endometrium with estrogen).
Q2.
A patient with chronic hypertension has an echocardiogram showing increased left ventricular wall thickness. This
finding represents:
A. Hyperplasia, due to increased cardiomyocyte number
B. Hypertrophy, an increase in cell size in response to increased workload [CORRECT]
C. Metaplasia, with replacement of cardiac muscle cells
D. Dysplasia, with disordered cellular architecture
Correct Answer: B
Rationale: Hypertrophy is an increase in cell size in response to increased workload or stress. Cardiac myocytes are
terminally differentiated and cannot undergo hyperplasia, so they hypertrophy in response to chronic pressure overload
(concentric hypertrophy in hypertension). Hyperplasia is increased cell number (not possible in cardiac muscle).
Metaplasia and dysplasia involve cell type changes or disordered growth, not seen in pure workload adaptation.
Integrated Pathophysiology & Pharmacology | Cognitive Levels: 30% Recall / 50% Application / 20% Analysis Page 2
,WGU D027 Pathophysiology and Pharmacology Exam 2026/2027 (Verified Answers) Western Governors University
Q3.
A patient suffers a myocardial infarction. Histologic examination of the infarcted tissue 24 hours later would most
likely demonstrate:
A. Apoptosis, with cell shrinkage and intact cell membrane
B. Coagulative necrosis, characterized by protein denaturation and firm tissue with preserved cell
outlines [CORRECT]
C. Liquefactive necrosis, with enzymatic tissue dissolution
D. Caseous necrosis, with cheese-like appearance typical of tuberculosis
Correct Answer: B
Rationale: Coagulative necrosis is the pattern seen in ischemic injury to most tissues (except the brain), characterized
by protein denaturation producing a firm tissue with preserved cell outlines. Myocardial infarction produces coagulative
necrosis. Liquefactive necrosis occurs in the brain (ischemic) or with bacterial infection (pus). Caseous necrosis is
typical of tuberculosis. Apoptosis is programmed cell death with cell shrinkage and intact membranes, not necrosis.
Q4.
A patient develops a brain infarction (ischemic stroke). The necrotic brain tissue undergoes which pattern of
necrosis?
A. Coagulative necrosis
B. Liquefactive necrosis, due to enzymatic digestion by neutrophils and microglia [CORRECT]
C. Caseous necrosis
D. Fat necrosis
Correct Answer: B
Rationale: Liquefactive necrosis occurs in the brain after ischemic injury because brain tissue lacks substantial
connective tissue and contains abundant lipids and enzymes. Microglia and neutrophils release enzymes that digest the
tissue into a liquid-like cystic space. Coagulative necrosis (preserved architecture) is the pattern in most other solid
organs. Caseous necrosis is associated with TB, and fat necrosis occurs in pancreatic injury and breast tissue.
Q5.
A patient with acute pancreatitis develops fat necrosis. Which pathophysiologic mechanism is responsible?
A. Ischemic injury to adipose tissue
B. Release of lipases that digest fat cells, forming calcium soaps with fatty acids [CORRECT]
C. Bacterial infection of subcutaneous fat
D. Immune-mediated destruction of adipocytes
Correct Answer: B
Rationale: Fat necrosis occurs when pancreatic lipases escape into tissue and digest triglycerides into free fatty acids,
which combine with calcium to form calcium soaps (saponification). This produces chalky white deposits in and around
the pancreas. It can also occur in breast tissue after trauma. Ischemia, infection, and immune-mediated processes are not
the mechanism. Serum calcium can drop due to saponification, requiring monitoring.
Integrated Pathophysiology & Pharmacology | Cognitive Levels: 30% Recall / 50% Application / 20% Analysis Page 3
, WGU D027 Pathophysiology and Pharmacology Exam 2026/2027 (Verified Answers) Western Governors University
Q6.
A 70-year-old with prolonged immobility develops decreased muscle mass in the lower extremities. This cellular
adaptation is:
A. Atrophy, a decrease in cell size due to decreased workload or disuse [CORRECT]
B. Hypertrophy, due to compensatory overload
C. Aplasia, complete absence of cell development
D. Hypoplasia, incomplete development of an organ
Correct Answer: A
Rationale: Atrophy is a decrease in cell size due to decreased workload, disuse, denervation, ischemia, or inadequate
nutrition. Disuse atrophy occurs with prolonged immobility, casting, or weightlessness. The cells shrink but remain
viable. Hypertrophy is increased cell size, aplasia is absence of cell formation, and hypoplasia is incomplete
development of an organ (congenital). Reversal requires removing the cause and restoring functional demand.
Q7.
A pathologist examines a cervical biopsy and notes disordered cellular arrangement, nuclear pleomorphism, and
increased mitotic figures that do not invade the basement membrane. This finding is best described as:
A. Metaplasia
B. Dysplasia, a precancerous atypical cellular proliferation that has not invaded the basement membrane
[CORRECT]
C. Carcinoma in situ, with invasion through the basement membrane
D. Hyperplasia
Correct Answer: B
Rationale: Dysplasia is disordered cellular proliferation with atypia (nuclear pleomorphism, increased mitoses,
abnormal architecture) that does not invade the basement membrane. It is a precancerous change often reversible with
removal of the irritant. Carcinoma in situ involves full-thickness atypia but still no basement membrane invasion.
Metaplasia is reversible cell type replacement. Hyperplasia is increased cell number without atypia. Dysplasia progresses
to carcinoma if untreated.
Q8.
A patient experiences severe hypoxia leading to cellular injury. The earliest intracellular accumulation that
indicates irreversible injury is:
A. Calcium deposition in mitochondria
B. Marked accumulation of intracellular calcium, causing activation of phospholipases, proteases, and
endonucleases that lead to cell death [CORRECT]
C. Lipid accumulation in hepatocytes
D. Glycogen accumulation in renal tubular cells
Correct Answer: B
Rationale: Intracellular calcium accumulation is a key mediator of irreversible cell injury. Ischemia/hypoxia causes
ATP depletion, failure of Ca-ATPase pumps, and influx of Ca into the cell. Calcium activates phospholipases
(membrane damage), proteases (cytoskeletal disruption), and endonucleases (DNA fragmentation). This cascade leads to
irreversible cell death. Lipid and glycogen accumulations are reversible cellular changes seen in metabolic disorders.
Integrated Pathophysiology & Pharmacology | Cognitive Levels: 30% Recall / 50% Application / 20% Analysis Page 4
WGU D027 Pathophysiology and Pharmacology Exam
2026/2027
140 Verified Questions & Answers — Aligned with the WGU D027 Objective Assessment Competency
Blueprint
Generated: September 21, 2026 | Format: Multiple Choice (4 options, one correct) | Total Items: 140
Section Topic Coverage Items
Section 1 Cellular Function, Injury, and Adaptation Q1–Q14
Section 2 Genetics, Inflammation, and Immunity Q15–Q30
Section 3 Infection, Fluid, Electrolytes, and Acid-Base Q31–Q48
Section 4 Cardiovascular and Hematologic Pathophysiology and Pharmacology Q49–Q72
Section 5 Respiratory and Renal Pathophysiology and Pharmacology Q73–Q92
Section 6 Neurologic, Musculoskeletal, and Sensory Pathophysiology and Pharmacology Q93–Q110
Section 7 Endocrine and Gastrointestinal Pathophysiology and Pharmacology Q111–Q128
Section 8 Oncology, Pain Management, and Pharmacologic Principles Q129–Q140
Directions: This practice exam mirrors the rigor and content coverage of the WGU D027 Pathophysiology and
Pharmacology Objective Assessment. Each of the 140 multiple-choice items presents four options (A–D) with
exactly one correct response. Items are calibrated to a cognitive distribution of approximately 30% recall, 50%
application, and 20% analysis. Approximately 75% of items are scenario-based, requiring integration of
pathophysiologic mechanisms with pharmacologic principles, medication-to-pathophysiology matching, adverse
effect recognition tied to drug mechanisms, and clinical judgment for nursing priority decisions. Approximately
25% assess direct recall of pathophysiologic concepts and pharmacologic principles. Coverage spans all WGU
D027 competency domains: cellular injury and adaptation; genetics, inflammation, and immunity; infection and
fluid/electrolyte/acid-base; cardiovascular and hematologic pathophysiology and pharmacology; respiratory and
renal; neurologic, musculoskeletal, and sensory; endocrine and gastrointestinal; and oncology, pain management,
and pharmacologic principles. After each item, the correct answer and a 2–4 sentence rationale are provided,
integrating disease mechanisms, drug mechanisms of action, clinical manifestations, nursing considerations, and
verification against WGU D027 course materials.
Integrated Pathophysiology & Pharmacology | Cognitive Levels: 30% Recall / 50% Application / 20% Analysis Page 1
,WGU D027 Pathophysiology and Pharmacology Exam 2026/2027 (Verified Answers) Western Governors University
Section 1: Cellular Function, Injury, and Adaptation
Cell Structure, Injury Mechanisms, Necrosis, Apoptosis, Atrophy, Hypertrophy, Hyperplasia, Metaplasia, and
Dysplasia | Items Q1–Q14
Q1.
A 65-year-old long-term smoker undergoes bronchoscopy. Biopsy of the bronchial epithelium reveals replacement
of normal columnar ciliated epithelium with stratified squamous epithelium. This cellular adaptation is best
described as:
A. Hypertrophy, due to increased cell size in response to mechanical stress
B. Metaplasia, the reversible replacement of one differentiated cell type with another more resistant to
chronic irritation [CORRECT]
C. Dysplasia, characterized by disordered cellular growth and atypia
D. Hyperplasia, an increase in the number of cells in a tissue
Correct Answer: B
Rationale: Metaplasia is the reversible replacement of one adult cell type with another, often occurring in response to
chronic irritation such as smoking. The squamous epithelium is more resistant to injury but loses ciliary function,
predisposing to infection. Hypertrophy involves increased cell size (e.g., cardiac muscle in hypertension), dysplasia
involves disordered atypical growth (a precancerous change), and hyperplasia is an increase in cell number (e.g.,
endometrium with estrogen).
Q2.
A patient with chronic hypertension has an echocardiogram showing increased left ventricular wall thickness. This
finding represents:
A. Hyperplasia, due to increased cardiomyocyte number
B. Hypertrophy, an increase in cell size in response to increased workload [CORRECT]
C. Metaplasia, with replacement of cardiac muscle cells
D. Dysplasia, with disordered cellular architecture
Correct Answer: B
Rationale: Hypertrophy is an increase in cell size in response to increased workload or stress. Cardiac myocytes are
terminally differentiated and cannot undergo hyperplasia, so they hypertrophy in response to chronic pressure overload
(concentric hypertrophy in hypertension). Hyperplasia is increased cell number (not possible in cardiac muscle).
Metaplasia and dysplasia involve cell type changes or disordered growth, not seen in pure workload adaptation.
Integrated Pathophysiology & Pharmacology | Cognitive Levels: 30% Recall / 50% Application / 20% Analysis Page 2
,WGU D027 Pathophysiology and Pharmacology Exam 2026/2027 (Verified Answers) Western Governors University
Q3.
A patient suffers a myocardial infarction. Histologic examination of the infarcted tissue 24 hours later would most
likely demonstrate:
A. Apoptosis, with cell shrinkage and intact cell membrane
B. Coagulative necrosis, characterized by protein denaturation and firm tissue with preserved cell
outlines [CORRECT]
C. Liquefactive necrosis, with enzymatic tissue dissolution
D. Caseous necrosis, with cheese-like appearance typical of tuberculosis
Correct Answer: B
Rationale: Coagulative necrosis is the pattern seen in ischemic injury to most tissues (except the brain), characterized
by protein denaturation producing a firm tissue with preserved cell outlines. Myocardial infarction produces coagulative
necrosis. Liquefactive necrosis occurs in the brain (ischemic) or with bacterial infection (pus). Caseous necrosis is
typical of tuberculosis. Apoptosis is programmed cell death with cell shrinkage and intact membranes, not necrosis.
Q4.
A patient develops a brain infarction (ischemic stroke). The necrotic brain tissue undergoes which pattern of
necrosis?
A. Coagulative necrosis
B. Liquefactive necrosis, due to enzymatic digestion by neutrophils and microglia [CORRECT]
C. Caseous necrosis
D. Fat necrosis
Correct Answer: B
Rationale: Liquefactive necrosis occurs in the brain after ischemic injury because brain tissue lacks substantial
connective tissue and contains abundant lipids and enzymes. Microglia and neutrophils release enzymes that digest the
tissue into a liquid-like cystic space. Coagulative necrosis (preserved architecture) is the pattern in most other solid
organs. Caseous necrosis is associated with TB, and fat necrosis occurs in pancreatic injury and breast tissue.
Q5.
A patient with acute pancreatitis develops fat necrosis. Which pathophysiologic mechanism is responsible?
A. Ischemic injury to adipose tissue
B. Release of lipases that digest fat cells, forming calcium soaps with fatty acids [CORRECT]
C. Bacterial infection of subcutaneous fat
D. Immune-mediated destruction of adipocytes
Correct Answer: B
Rationale: Fat necrosis occurs when pancreatic lipases escape into tissue and digest triglycerides into free fatty acids,
which combine with calcium to form calcium soaps (saponification). This produces chalky white deposits in and around
the pancreas. It can also occur in breast tissue after trauma. Ischemia, infection, and immune-mediated processes are not
the mechanism. Serum calcium can drop due to saponification, requiring monitoring.
Integrated Pathophysiology & Pharmacology | Cognitive Levels: 30% Recall / 50% Application / 20% Analysis Page 3
, WGU D027 Pathophysiology and Pharmacology Exam 2026/2027 (Verified Answers) Western Governors University
Q6.
A 70-year-old with prolonged immobility develops decreased muscle mass in the lower extremities. This cellular
adaptation is:
A. Atrophy, a decrease in cell size due to decreased workload or disuse [CORRECT]
B. Hypertrophy, due to compensatory overload
C. Aplasia, complete absence of cell development
D. Hypoplasia, incomplete development of an organ
Correct Answer: A
Rationale: Atrophy is a decrease in cell size due to decreased workload, disuse, denervation, ischemia, or inadequate
nutrition. Disuse atrophy occurs with prolonged immobility, casting, or weightlessness. The cells shrink but remain
viable. Hypertrophy is increased cell size, aplasia is absence of cell formation, and hypoplasia is incomplete
development of an organ (congenital). Reversal requires removing the cause and restoring functional demand.
Q7.
A pathologist examines a cervical biopsy and notes disordered cellular arrangement, nuclear pleomorphism, and
increased mitotic figures that do not invade the basement membrane. This finding is best described as:
A. Metaplasia
B. Dysplasia, a precancerous atypical cellular proliferation that has not invaded the basement membrane
[CORRECT]
C. Carcinoma in situ, with invasion through the basement membrane
D. Hyperplasia
Correct Answer: B
Rationale: Dysplasia is disordered cellular proliferation with atypia (nuclear pleomorphism, increased mitoses,
abnormal architecture) that does not invade the basement membrane. It is a precancerous change often reversible with
removal of the irritant. Carcinoma in situ involves full-thickness atypia but still no basement membrane invasion.
Metaplasia is reversible cell type replacement. Hyperplasia is increased cell number without atypia. Dysplasia progresses
to carcinoma if untreated.
Q8.
A patient experiences severe hypoxia leading to cellular injury. The earliest intracellular accumulation that
indicates irreversible injury is:
A. Calcium deposition in mitochondria
B. Marked accumulation of intracellular calcium, causing activation of phospholipases, proteases, and
endonucleases that lead to cell death [CORRECT]
C. Lipid accumulation in hepatocytes
D. Glycogen accumulation in renal tubular cells
Correct Answer: B
Rationale: Intracellular calcium accumulation is a key mediator of irreversible cell injury. Ischemia/hypoxia causes
ATP depletion, failure of Ca-ATPase pumps, and influx of Ca into the cell. Calcium activates phospholipases
(membrane damage), proteases (cytoskeletal disruption), and endonucleases (DNA fragmentation). This cascade leads to
irreversible cell death. Lipid and glycogen accumulations are reversible cellular changes seen in metabolic disorders.
Integrated Pathophysiology & Pharmacology | Cognitive Levels: 30% Recall / 50% Application / 20% Analysis Page 4
