WGU D236 OBJECTIVE ASSESSMENT FINAL EXAM /
PATHOPHYSIOLOGY D236 WGU OBJECTIVE ASSESSMENT (OA) FINAL
EXAM TEST BANK 2026/2027 PRACTICE QUESTIONS AND STUDY
GUIDE ACCURATE EXAM COMPLETE REAL QUESTIONS WITH WELL
ELABORATED SOLUTIONS AND DETAILED RATIONALES (100%
CORRECT VERIFIED ANSWERS) CURRENTLY UPDATED VERSION 2026
EDITION |FULL REVISED EXAM |JUST RELEASED
1. A 55-year-old male with a 30-year history of smoking is examined for
respiratory disturbance. Examination of his bronchial airway reveals that
stratified squamous epithelial cells have replaced the normal columnar
ciliated cells. This type of cellular adaptation is called:
A) Hyperplasia
B) Dysplasia
C) Metaplasia
D) Anaplasia
Correct Answer: C
Rationale: Metaplasia is the reversible replacement of one
differentiated cell type with another. In smokers, the normal
pseudostratified ciliated columnar epithelium of the bronchi is
replaced by stratified squamous epithelium as a protective adaptation
to chronic irritation.
,2. A patient with diabetic ketoacidosis demonstrates deep rapid
respirations and decreased bicarbonate levels. Which acid-base
imbalance is most likely present?
A) Respiratory alkalosis
B) Metabolic acidosis
C) Metabolic alkalosis
D) Respiratory acidosis
Correct Answer: B
Rationale: Diabetic ketoacidosis causes metabolic acidosis from ketone
accumulation. The deep rapid respirations (Kussmaul breathing)
represent a compensatory respiratory response to the metabolic
acidosis.
3. A patient receiving IV penicillin develops sudden bronchospasm,
hypotension, and urticaria within minutes of administration. This is an
example of which type of hypersensitivity reaction?
A) Type I (IgE-mediated)
B) Type II (Antibody-mediated cytotoxicity)
C) Type III (Immune complex)
D) Type IV (Delayed-type)
,Correct Answer: A
Rationale: Anaphylaxis to penicillin is a classic Type I reaction, where
drug-specific IgE on mast cells triggers degranulation and release of
vasoactive mediators such as histamine.
4. A 45-year-old woman with a history of autoimmune thyroiditis
presents with fatigue, weight gain, and cold intolerance. Laboratory
studies show an elevated TSH and low free T4. Which of the following
best describes the thyroid gland pathology?
A) Granulomatous inflammation with multinucleated giant cells
B) Lymphocytic infiltration with germinal centers and Hurthle cell
metaplasia
C) Follicular hyperplasia with colloid depletion
D) Malignant transformation of follicular cells
Correct Answer: B
Rationale: Hashimoto's thyroiditis is the most common cause of
hypothyroidism in iodine-sufficient regions. The gland is infiltrated by
lymphocytes, plasma cells, and germinal centers, with Hurthle cell
(oxyphilic) metaplasia.
5. What are two pulmonary causes leading to respiratory acidosis?
, A) Asthma and shortness of breath
B) Hyperventilation and fever
C) Cystic fibrosis and hypoventilation
D) Anemia and pain
Correct Answer: C
Rationale: Respiratory acidosis results from impaired ventilation
leading to CO₂ retention. Pulmonary causes include cystic fibrosis
(mucus plugging obstructing airways) and hypoventilation (reduced
alveolar ventilation).
6. Which sign is associated with amyotrophic lateral sclerosis (ALS)?
A) Impaired mental flexibility
B) Blurred vision
C) Head drop
D) Slowed thought processing
Correct Answer: C
Rationale: ALS is a progressive neurodegenerative disease affecting
motor neurons. Head drop occurs due to weakness of neck extensor
muscles. Cognitive function is typically preserved in ALS.
PATHOPHYSIOLOGY D236 WGU OBJECTIVE ASSESSMENT (OA) FINAL
EXAM TEST BANK 2026/2027 PRACTICE QUESTIONS AND STUDY
GUIDE ACCURATE EXAM COMPLETE REAL QUESTIONS WITH WELL
ELABORATED SOLUTIONS AND DETAILED RATIONALES (100%
CORRECT VERIFIED ANSWERS) CURRENTLY UPDATED VERSION 2026
EDITION |FULL REVISED EXAM |JUST RELEASED
1. A 55-year-old male with a 30-year history of smoking is examined for
respiratory disturbance. Examination of his bronchial airway reveals that
stratified squamous epithelial cells have replaced the normal columnar
ciliated cells. This type of cellular adaptation is called:
A) Hyperplasia
B) Dysplasia
C) Metaplasia
D) Anaplasia
Correct Answer: C
Rationale: Metaplasia is the reversible replacement of one
differentiated cell type with another. In smokers, the normal
pseudostratified ciliated columnar epithelium of the bronchi is
replaced by stratified squamous epithelium as a protective adaptation
to chronic irritation.
,2. A patient with diabetic ketoacidosis demonstrates deep rapid
respirations and decreased bicarbonate levels. Which acid-base
imbalance is most likely present?
A) Respiratory alkalosis
B) Metabolic acidosis
C) Metabolic alkalosis
D) Respiratory acidosis
Correct Answer: B
Rationale: Diabetic ketoacidosis causes metabolic acidosis from ketone
accumulation. The deep rapid respirations (Kussmaul breathing)
represent a compensatory respiratory response to the metabolic
acidosis.
3. A patient receiving IV penicillin develops sudden bronchospasm,
hypotension, and urticaria within minutes of administration. This is an
example of which type of hypersensitivity reaction?
A) Type I (IgE-mediated)
B) Type II (Antibody-mediated cytotoxicity)
C) Type III (Immune complex)
D) Type IV (Delayed-type)
,Correct Answer: A
Rationale: Anaphylaxis to penicillin is a classic Type I reaction, where
drug-specific IgE on mast cells triggers degranulation and release of
vasoactive mediators such as histamine.
4. A 45-year-old woman with a history of autoimmune thyroiditis
presents with fatigue, weight gain, and cold intolerance. Laboratory
studies show an elevated TSH and low free T4. Which of the following
best describes the thyroid gland pathology?
A) Granulomatous inflammation with multinucleated giant cells
B) Lymphocytic infiltration with germinal centers and Hurthle cell
metaplasia
C) Follicular hyperplasia with colloid depletion
D) Malignant transformation of follicular cells
Correct Answer: B
Rationale: Hashimoto's thyroiditis is the most common cause of
hypothyroidism in iodine-sufficient regions. The gland is infiltrated by
lymphocytes, plasma cells, and germinal centers, with Hurthle cell
(oxyphilic) metaplasia.
5. What are two pulmonary causes leading to respiratory acidosis?
, A) Asthma and shortness of breath
B) Hyperventilation and fever
C) Cystic fibrosis and hypoventilation
D) Anemia and pain
Correct Answer: C
Rationale: Respiratory acidosis results from impaired ventilation
leading to CO₂ retention. Pulmonary causes include cystic fibrosis
(mucus plugging obstructing airways) and hypoventilation (reduced
alveolar ventilation).
6. Which sign is associated with amyotrophic lateral sclerosis (ALS)?
A) Impaired mental flexibility
B) Blurred vision
C) Head drop
D) Slowed thought processing
Correct Answer: C
Rationale: ALS is a progressive neurodegenerative disease affecting
motor neurons. Head drop occurs due to weakness of neck extensor
muscles. Cognitive function is typically preserved in ALS.
