WGU D115 OA ADVANCED PATHOPHYSIOLOGYEXAM 2026 |
ACTUAL EXAM QUESTIONS WITH DETAILED ANSWERS
WITH RATIONALES AND A READINESS PRACTICE EXAM
TEST BANK WITH A STUDY GUIDE | LATEST UPDATED AND
VERIFIED FOR GUARANTEED PASS
1.
A patient experiences prolonged hypotension following trauma. Which cellular
change occurs first due to inadequate perfusion?
A. Lysosomal rupture
B. Decreased ATP production
C. Nuclear fragmentation
D. Mitochondrial membrane breakdown
Answer: B
Rationale: Hypoperfusion leads to hypoxia, reducing ATP synthesis and impairing
energy-dependent cellular processes.
2.
A biopsy shows replacement of ciliated respiratory epithelium with stratified
squamous epithelium in a smoker. This represents:
A. Dysplasia
B. Hyperplasia
C. Metaplasia
D. Neoplasia
Answer: C
Rationale: Metaplasia is a reversible change where one differentiated cell type is
replaced by another better suited to stress.
,3.
Which finding best differentiates apoptosis from necrosis?
A. DNA fragmentation
B. Cell membrane integrity
C. Mitochondrial involvement
D. Enzyme activation
Answer: B
Rationale: Apoptosis preserves membrane integrity and does not trigger
inflammation, unlike necrosis.
4.
A patient presents with fever, erythema, and swelling at a surgical site. Which
mediator is primarily responsible for increased vascular permeability?
A. Interleukin-2
B. Histamine
C. Complement C3
D. Interferon
Answer: B
Rationale: Histamine released from mast cells causes vasodilation and increased
permeability in acute inflammation.
5.
Chronic inflammation differs from acute inflammation by the predominance of:
A. Neutrophils
B. Basophils
C. Lymphocytes
D. Platelets
,Answer: C
Rationale: Chronic inflammation involves lymphocytes and macrophages rather
than neutrophils.
6.
A patient develops urticaria and bronchospasm minutes after eating shellfish. This
reaction is mediated by:
A. IgG
B. IgM
C. IgE
D. T lymphocytes
Answer: C
Rationale: Type I hypersensitivity reactions are IgE-mediated and cause rapid
mast cell degranulation.
7.
Endothelial dysfunction contributes to atherosclerosis primarily by:
A. Increasing HDL levels
B. Allowing LDL oxidation in the intima
C. Promoting vasodilation
D. Preventing platelet adhesion
Answer: B
Rationale: Endothelial injury allows LDL to enter and oxidize, initiating plaque
formation.
8.
Left ventricular hypertrophy in chronic hypertension occurs as a result of:
A. Volume overload
B. Pressure overload
, C. Reduced afterload
D. Decreased contractility
Answer: B
Rationale: Sustained pressure overload leads to concentric hypertrophy to
overcome increased resistance.
9.
A patient with systolic heart failure is most likely to have:
A. Preserved ejection fraction
B. Reduced cardiac output
C. Normal ventricular filling
D. Increased ventricular compliance
Answer: B
Rationale: Systolic failure involves impaired contractility and reduced cardiac
output.
10.
Troponin levels are preferred in diagnosing myocardial infarction because they:
A. Rise and fall rapidly
B. Are released from skeletal muscle
C. Are highly specific to cardiac tissue
D. Reflect myocardial oxygen demand
Answer: C
Rationale: Cardiac troponins are specific markers of myocardial injury.
ACTUAL EXAM QUESTIONS WITH DETAILED ANSWERS
WITH RATIONALES AND A READINESS PRACTICE EXAM
TEST BANK WITH A STUDY GUIDE | LATEST UPDATED AND
VERIFIED FOR GUARANTEED PASS
1.
A patient experiences prolonged hypotension following trauma. Which cellular
change occurs first due to inadequate perfusion?
A. Lysosomal rupture
B. Decreased ATP production
C. Nuclear fragmentation
D. Mitochondrial membrane breakdown
Answer: B
Rationale: Hypoperfusion leads to hypoxia, reducing ATP synthesis and impairing
energy-dependent cellular processes.
2.
A biopsy shows replacement of ciliated respiratory epithelium with stratified
squamous epithelium in a smoker. This represents:
A. Dysplasia
B. Hyperplasia
C. Metaplasia
D. Neoplasia
Answer: C
Rationale: Metaplasia is a reversible change where one differentiated cell type is
replaced by another better suited to stress.
,3.
Which finding best differentiates apoptosis from necrosis?
A. DNA fragmentation
B. Cell membrane integrity
C. Mitochondrial involvement
D. Enzyme activation
Answer: B
Rationale: Apoptosis preserves membrane integrity and does not trigger
inflammation, unlike necrosis.
4.
A patient presents with fever, erythema, and swelling at a surgical site. Which
mediator is primarily responsible for increased vascular permeability?
A. Interleukin-2
B. Histamine
C. Complement C3
D. Interferon
Answer: B
Rationale: Histamine released from mast cells causes vasodilation and increased
permeability in acute inflammation.
5.
Chronic inflammation differs from acute inflammation by the predominance of:
A. Neutrophils
B. Basophils
C. Lymphocytes
D. Platelets
,Answer: C
Rationale: Chronic inflammation involves lymphocytes and macrophages rather
than neutrophils.
6.
A patient develops urticaria and bronchospasm minutes after eating shellfish. This
reaction is mediated by:
A. IgG
B. IgM
C. IgE
D. T lymphocytes
Answer: C
Rationale: Type I hypersensitivity reactions are IgE-mediated and cause rapid
mast cell degranulation.
7.
Endothelial dysfunction contributes to atherosclerosis primarily by:
A. Increasing HDL levels
B. Allowing LDL oxidation in the intima
C. Promoting vasodilation
D. Preventing platelet adhesion
Answer: B
Rationale: Endothelial injury allows LDL to enter and oxidize, initiating plaque
formation.
8.
Left ventricular hypertrophy in chronic hypertension occurs as a result of:
A. Volume overload
B. Pressure overload
, C. Reduced afterload
D. Decreased contractility
Answer: B
Rationale: Sustained pressure overload leads to concentric hypertrophy to
overcome increased resistance.
9.
A patient with systolic heart failure is most likely to have:
A. Preserved ejection fraction
B. Reduced cardiac output
C. Normal ventricular filling
D. Increased ventricular compliance
Answer: B
Rationale: Systolic failure involves impaired contractility and reduced cardiac
output.
10.
Troponin levels are preferred in diagnosing myocardial infarction because they:
A. Rise and fall rapidly
B. Are released from skeletal muscle
C. Are highly specific to cardiac tissue
D. Reflect myocardial oxygen demand
Answer: C
Rationale: Cardiac troponins are specific markers of myocardial injury.
