WGU D027 EXAM REVIEW
Pathophysiology & Pharmacology
Verified Answers Study Guide
Comprehensive Examination Review
145-Question Practice Exam with Detailed Rationales
Aligned with WGU D027 Objective Assessment Blueprint
145 8 75% 25%
Total Questions Sections Scenario-Based Direct Recall
CONTENT DOMAINS
Cellular Injury & Adaptation • Genetics, Inflammation & Immunity • Infection, Fluid, Electrolytes &
Acid-Base • Cardiovascular & Hematologic Pathophysiology & Pharmacology • Respiratory & Renal
Pathophysiology & Pharmacology • Neurologic, Musculoskeletal & Sensory • Endocrine & GI
Pathophysiology & Pharmacology • Oncology, Pain & Pharmacologic Principles
Prepared for WGU D027 Pathophysiology & Pharmacology Candidates
Objective Assessment Preparation Resource
, Examination Overview & Section Map
This 145-question WGU D027 exam review guide integrates pathophysiology and pharmacology aligned with the
2026/2027 WGU objective assessment blueprint. Each question includes a detailed rationale explaining the
correct answer, why each distractor is wrong, and the pathophysiologic mechanisms, pharmacologic principles,
nursing considerations, and exam review notes behind the answer.
Section 1: Cellular Function, Injury, and Adaptation (Q1-14)
Cell structure, injury mechanisms, necrosis, apoptosis, atrophy, hypertrophy, hyperplasia, metaplasia, dysplasia.
Section 2: Genetics, Inflammation, and Immunity (Q15-30)
Genetic disorders, inflammatory response, wound healing, immune response, hypersensitivity, autoimmunity.
Section 3: Infection, Fluid, Electrolytes, and Acid-Base (Q31-48)
Infection process, fluid balance, electrolyte imbalances, acid-base balance, and ABG interpretation.
Section 4: Cardiovascular and Hematologic Pathophysiology and Pharmacology (Q49-74)
Hypertension, heart failure, CAD, dysrhythmias, anemias, coagulation, antihypertensives, diuretics, anticoagulants.
Section 5: Respiratory and Renal Pathophysiology and Pharmacology (Q75-94)
Asthma, COPD, pneumonia, ARDS, AKI, CKD, bronchodilators, corticosteroids, renal medications.
Section 6: Neurologic, Musculoskeletal, and Sensory Pathophysiology and Pharmacology (Q95-112)
Stroke, seizures, neurodegenerative disorders, osteoporosis, arthritis, analgesics, anticonvulsants, anti-inflammatories.
Section 7: Endocrine and Gastrointestinal Pathophysiology and Pharmacology (Q113-132)
Diabetes, thyroid disorders, GI disorders, insulin, oral antidiabetics, PPIs, antiemetics.
Section 8: Oncology, Pain Management, and Pharmacologic Principles (Q133-145)
Cancer pathophysiology, chemotherapy, pharmacokinetics, pharmacodynamics, drug interactions, adverse effects.
Cognitive Level Distribution
Recall (30%) — Direct identification of mechanisms, drug classes, and definitions.
Application (50%) — Clinical scenarios requiring disease and medication application.
Analysis (20%) — Comparison of disease processes, drug mechanisms, and prioritization.
How to Read Each Question
Each question presents a stem, four options (A-D), and a rationale. The correct option is marked [CORRECT] in
green, and the explicit Correct Answer line follows. Rationales integrate pathophysiologic reasoning, pharmacologic
principles, nursing considerations, exam review strategy notes, and verification against WGU D027 objective
assessment competencies.
,WGU D027 Exam Review 2026/2027 — Pathophysiology & Pharmacology Verified Answers
145-Question Practice Exam
SECTION 1: Cellular Function, Injury, and Adaptation (Q1-14)
Cell structure, injury mechanisms, necrosis, apoptosis, atrophy, hypertrophy, hyperplasia, metaplasia, dysplasia.
Q1.
A patient with chronic hypertension has an enlarged heart due to increased workload. The cardiomyocytes have
increased in size, not number. Which cellular adaptation does this represent?
A. Hypertrophy, an increase in cell size in response to increased workload. [CORRECT]
B. Hyperplasia, an increase in cell number in response to hormonal stimulation.
C. Metaplasia, the replacement of one differentiated cell type by another.
D. Dysplasia, disordered cell growth and abnormal maturation.
Correct Answer: A — Hypertrophy, an increase in cell size in response to increased workload.
Rationale: Hypertrophy is an increase in cell size (not number) due to increased workload or demand, as seen in
cardiac muscle under chronic hypertension. Hyperplasia is an increase in cell number; metaplasia is reversible
cell type replacement (e.g., squamous in smokers' airways); dysplasia is abnormal, disordered growth. Verified
tip: cardiac and skeletal muscle adapt through hypertrophy because these cells cannot divide.
Q2.
A 55-year-old female patient has had her uterus removed due to fibroids (leiomyomas), which are benign tumors
caused by an increase in the number of uterine smooth muscle cells. Which cellular adaptation caused the
fibroids?
A. Hyperplasia, an increase in cell number in response to hormonal stimulation. [CORRECT]
B. Hypertrophy, an increase in cell size in response to increased workload.
C. Metaplasia, replacement of one cell type by another.
D. Dysplasia, disordered cellular maturation.
Correct Answer: A — Hyperplasia, an increase in cell number in response to hormonal stimulation.
Rationale: Hyperplasia is an increase in cell number, often driven by hormonal stimulation, as in
estrogen-driven uterine fibroids and endometrial proliferation. Hypertrophy is size increase, not number.
Verified tip: hyperplasia = 'more cells'; hypertrophy = 'bigger cells.' Common exam trap: confusing the two for
hormone-driven growths.
Q3.
A long-time smoker has bronchial epithelium that has changed from ciliated columnar to stratified squamous.
Which cellular adaptation does this represent, and what is its significance?
A. Metaplasia, a reversible replacement of one adult cell type by another in response to chronic
irritation; may progress to malignancy if irritation continues. [CORRECT]
B. Dysplasia, abnormal disordered cell growth that is irreversible.
C. Hypertrophy, an increase in cell size due to increased workload.
D. Anaplasia, loss of cell differentiation characteristic of cancer.
Correct Answer: A — Metaplasia, a reversible replacement of one adult cell type by another in response
to c...
Rationale: Metaplasia is the reversible replacement of one differentiated cell type by another, often in response
to chronic irritation (e.g., squamous metaplasia in smokers' airways). It is reversible if the irritant is removed but
may progress to dysplasia and malignancy. Dysplasia is disordered growth; anaplasia is loss of differentiation in
cancer. Verified tip: metaplasia = reversible swap; dysplasia = abnormal pre-cancer.
WGU D027 Pathophysiology & Pharmacology • Exam Review Page 3
, WGU D027 Exam Review 2026/2027 — Pathophysiology & Pharmacology Verified Answers
145-Question Practice Exam
Q4.
A cervical biopsy shows disordered cell growth with abnormal nuclear morphology and loss of normal tissue
architecture. The cells have not invaded the basement membrane. Which cellular adaptation does this
represent?
A. Dysplasia, abnormal disordered cell growth that may progress to cancer if untreated.
[CORRECT]
B. Metaplasia, a reversible replacement of one cell type by another.
C. Anaplasia, completely undifferentiated cancer cells.
D. Hyperplasia, an increase in cell number with normal architecture.
Correct Answer: A — Dysplasia, abnormal disordered cell growth that may progress to cancer if
untreated.
Rationale: Dysplasia is characterized by disordered cell growth, abnormal nuclear morphology, and loss of
tissue architecture—but without basement membrane invasion. It is a pre-cancerous change that may regress or
progress to cancer (carcinoma in situ if severe). Metaplasia is reversible cell swap; anaplasia is invasive cancer;
hyperplasia preserves normal architecture.
Q5.
A patient on prolonged bedrest after surgery has visible shrinkage of the calf muscles. Which cellular adaptation
does this best represent?
A. Atrophy, a decrease in cell size due to decreased use or reduced trophic stimuli. [CORRECT]
B. Hypertrophy, an increase in cell size due to increased workload.
C. Metaplasia, replacement of one cell type by another.
D. Apoptosis, programmed cell death.
Correct Answer: A — Atrophy, a decrease in cell size due to decreased use or reduced trophic stimuli.
Rationale: Atrophy is a decrease in cell size due to decreased workload, disuse, reduced blood supply, or loss of
trophic hormones (e.g., denervation). Prolonged bedrest causes disuse atrophy. Verified tip: 'use it or lose
it'—atrophy = shrinkage from disuse; hypertrophy = growth from use.
Q6.
A 70-year-old patient has suffered an ischemic stroke. CT scan shows infarcted brain tissue that has undergone
cell death due to hypoxia. Microscopic examination would most likely reveal which type of cell death?
A. Liquefactive necrosis, characterized by enzymatic digestion and softening of dead tissue.
[CORRECT]
B. Coagulative necrosis, characterized by protein denaturation and firm tissue architecture.
C. Caseous necrosis, characterized by cheese-like appearance seen in tuberculosis.
D. Fat necrosis, characterized by saponification of fat tissue.
Correct Answer: A — Liquefactive necrosis, characterized by enzymatic digestion and softening of dead
tissue.
Rationale: Liquefactive necrosis is characteristic of ischemic brain injury because the brain lacks connective
tissue and bacterial or enzymatic digestion liquefies dead tissue. Coagulative necrosis is typical of ischemic
injury to most other organs (heart, kidney). Verified tip: brain ischemia = liquefactive; heart/kidney ischemia =
coagulative; TB = caseous; pancreas = fat necrosis.
Q7.
WGU D027 Pathophysiology & Pharmacology • Exam Review Page 4
Pathophysiology & Pharmacology
Verified Answers Study Guide
Comprehensive Examination Review
145-Question Practice Exam with Detailed Rationales
Aligned with WGU D027 Objective Assessment Blueprint
145 8 75% 25%
Total Questions Sections Scenario-Based Direct Recall
CONTENT DOMAINS
Cellular Injury & Adaptation • Genetics, Inflammation & Immunity • Infection, Fluid, Electrolytes &
Acid-Base • Cardiovascular & Hematologic Pathophysiology & Pharmacology • Respiratory & Renal
Pathophysiology & Pharmacology • Neurologic, Musculoskeletal & Sensory • Endocrine & GI
Pathophysiology & Pharmacology • Oncology, Pain & Pharmacologic Principles
Prepared for WGU D027 Pathophysiology & Pharmacology Candidates
Objective Assessment Preparation Resource
, Examination Overview & Section Map
This 145-question WGU D027 exam review guide integrates pathophysiology and pharmacology aligned with the
2026/2027 WGU objective assessment blueprint. Each question includes a detailed rationale explaining the
correct answer, why each distractor is wrong, and the pathophysiologic mechanisms, pharmacologic principles,
nursing considerations, and exam review notes behind the answer.
Section 1: Cellular Function, Injury, and Adaptation (Q1-14)
Cell structure, injury mechanisms, necrosis, apoptosis, atrophy, hypertrophy, hyperplasia, metaplasia, dysplasia.
Section 2: Genetics, Inflammation, and Immunity (Q15-30)
Genetic disorders, inflammatory response, wound healing, immune response, hypersensitivity, autoimmunity.
Section 3: Infection, Fluid, Electrolytes, and Acid-Base (Q31-48)
Infection process, fluid balance, electrolyte imbalances, acid-base balance, and ABG interpretation.
Section 4: Cardiovascular and Hematologic Pathophysiology and Pharmacology (Q49-74)
Hypertension, heart failure, CAD, dysrhythmias, anemias, coagulation, antihypertensives, diuretics, anticoagulants.
Section 5: Respiratory and Renal Pathophysiology and Pharmacology (Q75-94)
Asthma, COPD, pneumonia, ARDS, AKI, CKD, bronchodilators, corticosteroids, renal medications.
Section 6: Neurologic, Musculoskeletal, and Sensory Pathophysiology and Pharmacology (Q95-112)
Stroke, seizures, neurodegenerative disorders, osteoporosis, arthritis, analgesics, anticonvulsants, anti-inflammatories.
Section 7: Endocrine and Gastrointestinal Pathophysiology and Pharmacology (Q113-132)
Diabetes, thyroid disorders, GI disorders, insulin, oral antidiabetics, PPIs, antiemetics.
Section 8: Oncology, Pain Management, and Pharmacologic Principles (Q133-145)
Cancer pathophysiology, chemotherapy, pharmacokinetics, pharmacodynamics, drug interactions, adverse effects.
Cognitive Level Distribution
Recall (30%) — Direct identification of mechanisms, drug classes, and definitions.
Application (50%) — Clinical scenarios requiring disease and medication application.
Analysis (20%) — Comparison of disease processes, drug mechanisms, and prioritization.
How to Read Each Question
Each question presents a stem, four options (A-D), and a rationale. The correct option is marked [CORRECT] in
green, and the explicit Correct Answer line follows. Rationales integrate pathophysiologic reasoning, pharmacologic
principles, nursing considerations, exam review strategy notes, and verification against WGU D027 objective
assessment competencies.
,WGU D027 Exam Review 2026/2027 — Pathophysiology & Pharmacology Verified Answers
145-Question Practice Exam
SECTION 1: Cellular Function, Injury, and Adaptation (Q1-14)
Cell structure, injury mechanisms, necrosis, apoptosis, atrophy, hypertrophy, hyperplasia, metaplasia, dysplasia.
Q1.
A patient with chronic hypertension has an enlarged heart due to increased workload. The cardiomyocytes have
increased in size, not number. Which cellular adaptation does this represent?
A. Hypertrophy, an increase in cell size in response to increased workload. [CORRECT]
B. Hyperplasia, an increase in cell number in response to hormonal stimulation.
C. Metaplasia, the replacement of one differentiated cell type by another.
D. Dysplasia, disordered cell growth and abnormal maturation.
Correct Answer: A — Hypertrophy, an increase in cell size in response to increased workload.
Rationale: Hypertrophy is an increase in cell size (not number) due to increased workload or demand, as seen in
cardiac muscle under chronic hypertension. Hyperplasia is an increase in cell number; metaplasia is reversible
cell type replacement (e.g., squamous in smokers' airways); dysplasia is abnormal, disordered growth. Verified
tip: cardiac and skeletal muscle adapt through hypertrophy because these cells cannot divide.
Q2.
A 55-year-old female patient has had her uterus removed due to fibroids (leiomyomas), which are benign tumors
caused by an increase in the number of uterine smooth muscle cells. Which cellular adaptation caused the
fibroids?
A. Hyperplasia, an increase in cell number in response to hormonal stimulation. [CORRECT]
B. Hypertrophy, an increase in cell size in response to increased workload.
C. Metaplasia, replacement of one cell type by another.
D. Dysplasia, disordered cellular maturation.
Correct Answer: A — Hyperplasia, an increase in cell number in response to hormonal stimulation.
Rationale: Hyperplasia is an increase in cell number, often driven by hormonal stimulation, as in
estrogen-driven uterine fibroids and endometrial proliferation. Hypertrophy is size increase, not number.
Verified tip: hyperplasia = 'more cells'; hypertrophy = 'bigger cells.' Common exam trap: confusing the two for
hormone-driven growths.
Q3.
A long-time smoker has bronchial epithelium that has changed from ciliated columnar to stratified squamous.
Which cellular adaptation does this represent, and what is its significance?
A. Metaplasia, a reversible replacement of one adult cell type by another in response to chronic
irritation; may progress to malignancy if irritation continues. [CORRECT]
B. Dysplasia, abnormal disordered cell growth that is irreversible.
C. Hypertrophy, an increase in cell size due to increased workload.
D. Anaplasia, loss of cell differentiation characteristic of cancer.
Correct Answer: A — Metaplasia, a reversible replacement of one adult cell type by another in response
to c...
Rationale: Metaplasia is the reversible replacement of one differentiated cell type by another, often in response
to chronic irritation (e.g., squamous metaplasia in smokers' airways). It is reversible if the irritant is removed but
may progress to dysplasia and malignancy. Dysplasia is disordered growth; anaplasia is loss of differentiation in
cancer. Verified tip: metaplasia = reversible swap; dysplasia = abnormal pre-cancer.
WGU D027 Pathophysiology & Pharmacology • Exam Review Page 3
, WGU D027 Exam Review 2026/2027 — Pathophysiology & Pharmacology Verified Answers
145-Question Practice Exam
Q4.
A cervical biopsy shows disordered cell growth with abnormal nuclear morphology and loss of normal tissue
architecture. The cells have not invaded the basement membrane. Which cellular adaptation does this
represent?
A. Dysplasia, abnormal disordered cell growth that may progress to cancer if untreated.
[CORRECT]
B. Metaplasia, a reversible replacement of one cell type by another.
C. Anaplasia, completely undifferentiated cancer cells.
D. Hyperplasia, an increase in cell number with normal architecture.
Correct Answer: A — Dysplasia, abnormal disordered cell growth that may progress to cancer if
untreated.
Rationale: Dysplasia is characterized by disordered cell growth, abnormal nuclear morphology, and loss of
tissue architecture—but without basement membrane invasion. It is a pre-cancerous change that may regress or
progress to cancer (carcinoma in situ if severe). Metaplasia is reversible cell swap; anaplasia is invasive cancer;
hyperplasia preserves normal architecture.
Q5.
A patient on prolonged bedrest after surgery has visible shrinkage of the calf muscles. Which cellular adaptation
does this best represent?
A. Atrophy, a decrease in cell size due to decreased use or reduced trophic stimuli. [CORRECT]
B. Hypertrophy, an increase in cell size due to increased workload.
C. Metaplasia, replacement of one cell type by another.
D. Apoptosis, programmed cell death.
Correct Answer: A — Atrophy, a decrease in cell size due to decreased use or reduced trophic stimuli.
Rationale: Atrophy is a decrease in cell size due to decreased workload, disuse, reduced blood supply, or loss of
trophic hormones (e.g., denervation). Prolonged bedrest causes disuse atrophy. Verified tip: 'use it or lose
it'—atrophy = shrinkage from disuse; hypertrophy = growth from use.
Q6.
A 70-year-old patient has suffered an ischemic stroke. CT scan shows infarcted brain tissue that has undergone
cell death due to hypoxia. Microscopic examination would most likely reveal which type of cell death?
A. Liquefactive necrosis, characterized by enzymatic digestion and softening of dead tissue.
[CORRECT]
B. Coagulative necrosis, characterized by protein denaturation and firm tissue architecture.
C. Caseous necrosis, characterized by cheese-like appearance seen in tuberculosis.
D. Fat necrosis, characterized by saponification of fat tissue.
Correct Answer: A — Liquefactive necrosis, characterized by enzymatic digestion and softening of dead
tissue.
Rationale: Liquefactive necrosis is characteristic of ischemic brain injury because the brain lacks connective
tissue and bacterial or enzymatic digestion liquefies dead tissue. Coagulative necrosis is typical of ischemic
injury to most other organs (heart, kidney). Verified tip: brain ischemia = liquefactive; heart/kidney ischemia =
coagulative; TB = caseous; pancreas = fat necrosis.
Q7.
WGU D027 Pathophysiology & Pharmacology • Exam Review Page 4
