LATEST WGU D236
PATHOPHYSIOLOGY ACTUAL 2026
EXAM 100 QUESTIONS AND
CORRECT DETAILED ANSWERS |
ALREADY GRADED A+
CORE DOMAINS
• Cellular Adaptation, Injury, and Death
• Inflammation and Immunity
• Fluid, Electrolyte, and Acid-Base Balance
• Genetic and Developmental 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. Which cellular adaptation occurs when there is a replacement of one
mature cell type by another, less mature cell type?
A. Metaplasia
B. Hypertrophy
C. Atrophy
D. Dysplasia
RATIONALE: Metaplasia is the reversible replacement of one mature cell
type by another, often as a response to chronic irritation. An example is the
replacement of ciliated columnar epithelium with squamous epithelium in
smokers .
2. 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: ATP depletion impairs the Na⁺/K⁺ ATPase pump, causing
sodium influx and water retention, leading to cellular swelling. This is the
earliest manifestation of reversible cell injury .
3. Which type of necrosis is most commonly associated with bacterial
infections like tuberculosis?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fat necrosis
RATIONALE: Caseous necrosis is characterized by a cheese-like
appearance and is typical in granulomatous infections like tuberculosis due to
macrophage activity .
4. What is the hallmark feature of apoptosis compared to necrosis?
A. Cell membrane rupture
B. DNA fragmentation with preserved membrane integrity
C. Tissue liquefaction
D. Inflammatory response
RATIONALE: Apoptosis is programmed cell death characterized by DNA
fragmentation, cell shrinkage, and preserved membrane integrity (forming
apoptotic bodies), without an inflammatory response. Necrosis involves cell
swelling, membrane rupture, and inflammation .
5. What is the primary source of free radical production during
reperfusion injury?
, A. Mitochondrial dysfunction
B. Lysosomal rupture
C. Generation of reactive oxygen species (ROS)
D. Nuclear fragmentation
RATIONALE: During reperfusion, mitochondria generate reactive oxygen
species (ROS) due to restored oxygen reacting with accumulated electrons,
causing oxidative stress. This is the primary mechanism of reperfusion injury .
6. A patient with chronic obstructive pulmonary disease (COPD)
develops right-sided heart failure (cor pulmonale). Which cellular
adaptation best explains this finding?
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. This is an adaptive response to increased afterload .
7. A patient has a Pap test result showing mild dysplasia. How should
the nurse explain this finding?
A. "This is a normal finding and requires no follow-up."
B. "This is an abnormal change in cell size, shape, and organization that
may be reversible."
C. "This indicates invasive cancer requiring immediate treatment."
D. "This is a type of metaplasia that is always benign."
RATIONALE: Dysplasia is characterized by disordered cell growth with
variations in size, shape, and organization. It is not cancer but can be a
PATHOPHYSIOLOGY ACTUAL 2026
EXAM 100 QUESTIONS AND
CORRECT DETAILED ANSWERS |
ALREADY GRADED A+
CORE DOMAINS
• Cellular Adaptation, Injury, and Death
• Inflammation and Immunity
• Fluid, Electrolyte, and Acid-Base Balance
• Genetic and Developmental 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. Which cellular adaptation occurs when there is a replacement of one
mature cell type by another, less mature cell type?
A. Metaplasia
B. Hypertrophy
C. Atrophy
D. Dysplasia
RATIONALE: Metaplasia is the reversible replacement of one mature cell
type by another, often as a response to chronic irritation. An example is the
replacement of ciliated columnar epithelium with squamous epithelium in
smokers .
2. 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: ATP depletion impairs the Na⁺/K⁺ ATPase pump, causing
sodium influx and water retention, leading to cellular swelling. This is the
earliest manifestation of reversible cell injury .
3. Which type of necrosis is most commonly associated with bacterial
infections like tuberculosis?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fat necrosis
RATIONALE: Caseous necrosis is characterized by a cheese-like
appearance and is typical in granulomatous infections like tuberculosis due to
macrophage activity .
4. What is the hallmark feature of apoptosis compared to necrosis?
A. Cell membrane rupture
B. DNA fragmentation with preserved membrane integrity
C. Tissue liquefaction
D. Inflammatory response
RATIONALE: Apoptosis is programmed cell death characterized by DNA
fragmentation, cell shrinkage, and preserved membrane integrity (forming
apoptotic bodies), without an inflammatory response. Necrosis involves cell
swelling, membrane rupture, and inflammation .
5. What is the primary source of free radical production during
reperfusion injury?
, A. Mitochondrial dysfunction
B. Lysosomal rupture
C. Generation of reactive oxygen species (ROS)
D. Nuclear fragmentation
RATIONALE: During reperfusion, mitochondria generate reactive oxygen
species (ROS) due to restored oxygen reacting with accumulated electrons,
causing oxidative stress. This is the primary mechanism of reperfusion injury .
6. A patient with chronic obstructive pulmonary disease (COPD)
develops right-sided heart failure (cor pulmonale). Which cellular
adaptation best explains this finding?
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. This is an adaptive response to increased afterload .
7. A patient has a Pap test result showing mild dysplasia. How should
the nurse explain this finding?
A. "This is a normal finding and requires no follow-up."
B. "This is an abnormal change in cell size, shape, and organization that
may be reversible."
C. "This indicates invasive cancer requiring immediate treatment."
D. "This is a type of metaplasia that is always benign."
RATIONALE: Dysplasia is characterized by disordered cell growth with
variations in size, shape, and organization. It is not cancer but can be a
