WGU PATHOPHYSIOLOGY STUDY
GUIDE: D236 PATHOPHYSIOLOGY EXAM
QUESTIONS COMPLETED WITH
CORRECT ANSWERS
CORE DOMAINS
• Cellular Adaptation, Injury, and Death
• Inflammation and Immunity
• Fluid, Electrolyte, and Acid-Base Balance
• Genetics and Congenital Disorders
• Neoplasia and Cancer Biology
• Cardiovascular Pathophysiology
• Respiratory Pathophysiology
• Renal and Urinary Pathophysiology
• Endocrine Pathophysiology
• Neurological and Musculoskeletal Pathophysiology
INTRODUCTION
The WGU D236 Pathophysiology Objective Assessment evaluates
competency in the physiological mechanisms underlying human
disease. This comprehensive examination assesses knowledge of
,cellular adaptation, inflammation, immunity, fluid and electrolyte
balance, acid-base regulation, and systemic pathophysiology across
major body systems. The exam employs multiple-choice and
scenario-based questions requiring clinical judgment and application
of pathophysiological principles. Candidates must demonstrate
understanding of disease processes, clinical manifestations,
diagnostic findings, and compensatory mechanisms. Competency in
this course supports the development of clinical reasoning essential
for nursing practice and evidence-based patient care.
SECTION ONE: QUESTIONS 1–100
1. A patient's muscle mass decreased after their leg was
immobilized in a cast for six weeks. What is this cellular
adaptation called?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Atrophy
RATIONALE: Atrophy is a decrease in cell size and metabolic
activity resulting from reduced workload, disuse, or diminished
blood supply. Immobilization leads to skeletal muscle atrophy.
2. Which type of necrosis is the most common pattern
following ischemic injury in solid organs such as the heart,
kidney, and liver?
,A. Liquefactive necrosis
B. Coagulative necrosis
C. Caseous necrosis
D. Fat necrosis
RATIONALE: Coagulative necrosis is the classic pattern of
ischemic injury in solid organs. Protein denaturation preserves
tissue architecture with hypereosinophilic cytoplasm and loss of
nuclei.
3. A patient with chronic obstructive pulmonary disease
develops right-sided heart failure. Which cellular adaptation
best explains the increased right ventricular mass?
A. Hyperplasia
B. Hypertrophy
C. Metaplasia
D. Dysplasia
RATIONALE: Chronic pulmonary hypertension increases the
workload on the right ventricle, causing compensatory hypertrophy
of the right ventricular myocardium in response to increased
afterload.
4. What characterizes apoptosis compared to necrosis?
A. Cell membrane rupture with inflammation
B. Programmed cell death without inflammatory response
, C. Tissue liquefaction with abscess formation
D. Ischemic lysis with enzyme release
RATIONALE: Apoptosis is a controlled, energy-dependent
process of programmed cell death characterized by DNA
fragmentation, cell shrinkage, and preserved membrane integrity
without triggering inflammation.
5. Which type of necrosis is characterized by a cheese-like
appearance and is commonly associated with tuberculosis?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fibrinoid necrosis
RATIONALE: Caseous necrosis is characterized by a soft,
granular, white mass with a cheese-like appearance. It is the classic
pattern seen in tuberculosis and some fungal infections.
6. Cellular swelling (hydropic change) results from failure of
which pump?
A. Calcium ATPase pump
B. Sodium-potassium ATPase pump
C. Proton pump
D. Glucose transporter
RATIONALE: Ischemia depletes ATP, causing failure of the
Na⁺/K⁺ ATPase pump. Sodium accumulates intracellularly, followed
GUIDE: D236 PATHOPHYSIOLOGY EXAM
QUESTIONS COMPLETED WITH
CORRECT ANSWERS
CORE DOMAINS
• Cellular Adaptation, Injury, and Death
• Inflammation and Immunity
• Fluid, Electrolyte, and Acid-Base Balance
• Genetics and Congenital Disorders
• Neoplasia and Cancer Biology
• Cardiovascular Pathophysiology
• Respiratory Pathophysiology
• Renal and Urinary Pathophysiology
• Endocrine Pathophysiology
• Neurological and Musculoskeletal Pathophysiology
INTRODUCTION
The WGU D236 Pathophysiology Objective Assessment evaluates
competency in the physiological mechanisms underlying human
disease. This comprehensive examination assesses knowledge of
,cellular adaptation, inflammation, immunity, fluid and electrolyte
balance, acid-base regulation, and systemic pathophysiology across
major body systems. The exam employs multiple-choice and
scenario-based questions requiring clinical judgment and application
of pathophysiological principles. Candidates must demonstrate
understanding of disease processes, clinical manifestations,
diagnostic findings, and compensatory mechanisms. Competency in
this course supports the development of clinical reasoning essential
for nursing practice and evidence-based patient care.
SECTION ONE: QUESTIONS 1–100
1. A patient's muscle mass decreased after their leg was
immobilized in a cast for six weeks. What is this cellular
adaptation called?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Atrophy
RATIONALE: Atrophy is a decrease in cell size and metabolic
activity resulting from reduced workload, disuse, or diminished
blood supply. Immobilization leads to skeletal muscle atrophy.
2. Which type of necrosis is the most common pattern
following ischemic injury in solid organs such as the heart,
kidney, and liver?
,A. Liquefactive necrosis
B. Coagulative necrosis
C. Caseous necrosis
D. Fat necrosis
RATIONALE: Coagulative necrosis is the classic pattern of
ischemic injury in solid organs. Protein denaturation preserves
tissue architecture with hypereosinophilic cytoplasm and loss of
nuclei.
3. A patient with chronic obstructive pulmonary disease
develops right-sided heart failure. Which cellular adaptation
best explains the increased right ventricular mass?
A. Hyperplasia
B. Hypertrophy
C. Metaplasia
D. Dysplasia
RATIONALE: Chronic pulmonary hypertension increases the
workload on the right ventricle, causing compensatory hypertrophy
of the right ventricular myocardium in response to increased
afterload.
4. What characterizes apoptosis compared to necrosis?
A. Cell membrane rupture with inflammation
B. Programmed cell death without inflammatory response
, C. Tissue liquefaction with abscess formation
D. Ischemic lysis with enzyme release
RATIONALE: Apoptosis is a controlled, energy-dependent
process of programmed cell death characterized by DNA
fragmentation, cell shrinkage, and preserved membrane integrity
without triggering inflammation.
5. Which type of necrosis is characterized by a cheese-like
appearance and is commonly associated with tuberculosis?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fibrinoid necrosis
RATIONALE: Caseous necrosis is characterized by a soft,
granular, white mass with a cheese-like appearance. It is the classic
pattern seen in tuberculosis and some fungal infections.
6. Cellular swelling (hydropic change) results from failure of
which pump?
A. Calcium ATPase pump
B. Sodium-potassium ATPase pump
C. Proton pump
D. Glucose transporter
RATIONALE: Ischemia depletes ATP, causing failure of the
Na⁺/K⁺ ATPase pump. Sodium accumulates intracellularly, followed
