NR 507 Advanced Pathophysiology – Chamberlain College of
Nursing – Academic Year 2026/2027 – Comprehensive
Examination Package with Verified Questions and Correct
Answer Rationales
SECTION I: CELLULAR ADAPTATION, INJURY, AND DEATH
Question 1
A 62-year-old male with a 40-pack-year smoking history undergoes bronchoscopy that reveals
replacement of normal ciliated columnar epithelium with stratified squamous epithelium in the
bronchi. This cellular change is best classified as:
A. Hyperplasia
B. Metaplasia
C. Dysplasia
D. Anaplasia
Correct Answer: B. Metaplasia
Rationale: Metaplasia is the reversible substitution of one differentiated cell type with
another in response to chronic irritation. In smokers, chronic exposure to carcinogens causes
columnar epithelium to transform into squamous epithelium, which is more protective against
irritants but loses mucus-clearing function. Hyperplasia refers to increased cell number,
dysplasia to disordered growth with atypia, and anaplasia to loss of differentiation seen in
malignancy.
Question 2
A breast biopsy from a 34-year-old woman demonstrates ductal epithelium with loss of cellular
polarity, nuclear pleomorphism, and increased mitotic figures. The basement membrane
remains intact. This finding is most consistent with:
A. Hyperplasia
B. Metaplasia
C. Dysplasia
D. Carcinoma in situ
Correct Answer: C. Dysplasia
,Rationale: Dysplasia is characterized by disordered growth with cytologic atypia (loss of
polarity, pleomorphism, increased mitoses) confined within the basement membrane. It
represents a pre-neoplastic change. Carcinoma in situ would involve malignant cells that have
not invaded but exhibit full malignant features. Simple hyperplasia lacks atypia.
Question 3
A 55-year-old man with COPD presents with a barrel chest and flattened diaphragm on chest X-
ray. These physical changes are primarily the result of:
A. Apoptosis of type I alveolar cells
B. Centrilobular emphysema with loss of elastic recoil leading to air trapping
C. Hyperplasia of bronchial smooth muscle
D. Hypertrophy of mucus glands
Correct Answer: B. Centrilobular emphysema with loss of elastic recoil leading to air
trapping
Rationale: Emphysema destroys alveolar walls, leading to loss of elastic recoil. This causes
air trapping and hyperinflation of the lungs, which pushes the diaphragm downward (flattening
it) and increases the anteroposterior diameter of the chest (barrel chest). The other options
describe other COPD pathologies.
Question 4
A 70-year-old man with congestive heart failure develops bilateral pitting edema in his lower
extremities. Which alteration in Starling forces is primarily responsible for this edema?
A. Increased plasma oncotic pressure
B. Increased interstitial hydrostatic pressure
C. Increased capillary hydrostatic pressure
D. Decreased capillary oncotic pressure
Correct Answer: C. Increased capillary hydrostatic pressure
Rationale: In heart failure, increased venous pressure leads to increased capillary
hydrostatic pressure. This forces fluid out of the capillaries into the interstitial space, resulting in
edema. Plasma oncotic pressure is typically decreased in conditions like liver disease or
malnutrition, not CHF.
,Question 5
During severe hypoxia, which biochemical event is the primary cause of cellular swelling?
A. Accumulation of misfolded proteins
B. Depletion of ATP leading to failure of the sodium-potassium pump
C. Activation of apoptotic pathways by p53
D. Excessive protein synthesis
Correct Answer: B. Depletion of ATP leading to failure of the sodium-potassium pump
Rationale: During severe hypoxia, oxidative phosphorylation ceases, leading to critical ATP
depletion. Without ATP, the Na⁺/K⁺ ATPase pump fails, causing an influx of sodium and water
into the cell (cellular swelling) and efflux of potassium. This leads to membrane damage,
calcium influx, and eventual necrosis.
Question 6
Which type of necrosis is most commonly associated with myocardial infarction?
A. Caseous necrosis
B. Coagulative necrosis
C. Liquefactive necrosis
D. Fat necrosis
Correct Answer: B. Coagulative necrosis
Rationale: Coagulative necrosis results from ischemia in most tissues (except the brain). In
myocardial infarction, the cellular architecture is preserved for days, and the tissue becomes
firm and pale. Liquefactive necrosis is typical in the brain; caseous in tuberculosis; fat necrosis in
pancreatitis.
Question 7
A 28-year-old woman undergoes fine-needle aspiration of a thyroid nodule. Cytology reveals
cells with nuclear grooves, pale chromatin, and pseudoinclusions. These findings are most
consistent with:
, A. Papillary thyroid carcinoma
B. Follicular adenoma
C. Hashimoto thyroiditis
D. Medullary thyroid carcinoma
Correct Answer: A. Papillary thyroid carcinoma
Rationale: Papillary thyroid carcinoma is characterized by distinctive nuclear features
including optical clearing (Orphan Annie eyes), nuclear grooves, and intranuclear
pseudoinclusions. These cytologic features are diagnostic. Hashimoto thyroiditis would show
lymphocytic infiltration, and medullary carcinoma would show amyloid stroma.
Question 8
Which of the following best describes the process of apoptosis?
A. Uncontrolled cell death resulting in inflammation
B. Cell swelling and membrane rupture
C. Programmed cell death involving caspase activation
D. Necrotic death due to ischemia
Correct Answer: C. Programmed cell death involving caspase activation
Rationale: Apoptosis is a regulated, programmed form of cell death that involves activation
of caspases. It does not trigger inflammation, unlike necrosis, and is essential for normal
development and tissue homeostasis.
Question 9
A 45-year-old alcoholic presents with severe epigastric pain radiating to the back. Serum lipase
is markedly elevated. Which type of necrosis is occurring in the pancreas?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Fat necrosis
D. Fibrinoid necrosis
Correct Answer: C. Fat necrosis
Rationale: Acute pancreatitis causes release of pancreatic lipases that break down
triglycerides into fatty acids. These fatty acids combine with calcium (saponification) to form fat
Nursing – Academic Year 2026/2027 – Comprehensive
Examination Package with Verified Questions and Correct
Answer Rationales
SECTION I: CELLULAR ADAPTATION, INJURY, AND DEATH
Question 1
A 62-year-old male with a 40-pack-year smoking history undergoes bronchoscopy that reveals
replacement of normal ciliated columnar epithelium with stratified squamous epithelium in the
bronchi. This cellular change is best classified as:
A. Hyperplasia
B. Metaplasia
C. Dysplasia
D. Anaplasia
Correct Answer: B. Metaplasia
Rationale: Metaplasia is the reversible substitution of one differentiated cell type with
another in response to chronic irritation. In smokers, chronic exposure to carcinogens causes
columnar epithelium to transform into squamous epithelium, which is more protective against
irritants but loses mucus-clearing function. Hyperplasia refers to increased cell number,
dysplasia to disordered growth with atypia, and anaplasia to loss of differentiation seen in
malignancy.
Question 2
A breast biopsy from a 34-year-old woman demonstrates ductal epithelium with loss of cellular
polarity, nuclear pleomorphism, and increased mitotic figures. The basement membrane
remains intact. This finding is most consistent with:
A. Hyperplasia
B. Metaplasia
C. Dysplasia
D. Carcinoma in situ
Correct Answer: C. Dysplasia
,Rationale: Dysplasia is characterized by disordered growth with cytologic atypia (loss of
polarity, pleomorphism, increased mitoses) confined within the basement membrane. It
represents a pre-neoplastic change. Carcinoma in situ would involve malignant cells that have
not invaded but exhibit full malignant features. Simple hyperplasia lacks atypia.
Question 3
A 55-year-old man with COPD presents with a barrel chest and flattened diaphragm on chest X-
ray. These physical changes are primarily the result of:
A. Apoptosis of type I alveolar cells
B. Centrilobular emphysema with loss of elastic recoil leading to air trapping
C. Hyperplasia of bronchial smooth muscle
D. Hypertrophy of mucus glands
Correct Answer: B. Centrilobular emphysema with loss of elastic recoil leading to air
trapping
Rationale: Emphysema destroys alveolar walls, leading to loss of elastic recoil. This causes
air trapping and hyperinflation of the lungs, which pushes the diaphragm downward (flattening
it) and increases the anteroposterior diameter of the chest (barrel chest). The other options
describe other COPD pathologies.
Question 4
A 70-year-old man with congestive heart failure develops bilateral pitting edema in his lower
extremities. Which alteration in Starling forces is primarily responsible for this edema?
A. Increased plasma oncotic pressure
B. Increased interstitial hydrostatic pressure
C. Increased capillary hydrostatic pressure
D. Decreased capillary oncotic pressure
Correct Answer: C. Increased capillary hydrostatic pressure
Rationale: In heart failure, increased venous pressure leads to increased capillary
hydrostatic pressure. This forces fluid out of the capillaries into the interstitial space, resulting in
edema. Plasma oncotic pressure is typically decreased in conditions like liver disease or
malnutrition, not CHF.
,Question 5
During severe hypoxia, which biochemical event is the primary cause of cellular swelling?
A. Accumulation of misfolded proteins
B. Depletion of ATP leading to failure of the sodium-potassium pump
C. Activation of apoptotic pathways by p53
D. Excessive protein synthesis
Correct Answer: B. Depletion of ATP leading to failure of the sodium-potassium pump
Rationale: During severe hypoxia, oxidative phosphorylation ceases, leading to critical ATP
depletion. Without ATP, the Na⁺/K⁺ ATPase pump fails, causing an influx of sodium and water
into the cell (cellular swelling) and efflux of potassium. This leads to membrane damage,
calcium influx, and eventual necrosis.
Question 6
Which type of necrosis is most commonly associated with myocardial infarction?
A. Caseous necrosis
B. Coagulative necrosis
C. Liquefactive necrosis
D. Fat necrosis
Correct Answer: B. Coagulative necrosis
Rationale: Coagulative necrosis results from ischemia in most tissues (except the brain). In
myocardial infarction, the cellular architecture is preserved for days, and the tissue becomes
firm and pale. Liquefactive necrosis is typical in the brain; caseous in tuberculosis; fat necrosis in
pancreatitis.
Question 7
A 28-year-old woman undergoes fine-needle aspiration of a thyroid nodule. Cytology reveals
cells with nuclear grooves, pale chromatin, and pseudoinclusions. These findings are most
consistent with:
, A. Papillary thyroid carcinoma
B. Follicular adenoma
C. Hashimoto thyroiditis
D. Medullary thyroid carcinoma
Correct Answer: A. Papillary thyroid carcinoma
Rationale: Papillary thyroid carcinoma is characterized by distinctive nuclear features
including optical clearing (Orphan Annie eyes), nuclear grooves, and intranuclear
pseudoinclusions. These cytologic features are diagnostic. Hashimoto thyroiditis would show
lymphocytic infiltration, and medullary carcinoma would show amyloid stroma.
Question 8
Which of the following best describes the process of apoptosis?
A. Uncontrolled cell death resulting in inflammation
B. Cell swelling and membrane rupture
C. Programmed cell death involving caspase activation
D. Necrotic death due to ischemia
Correct Answer: C. Programmed cell death involving caspase activation
Rationale: Apoptosis is a regulated, programmed form of cell death that involves activation
of caspases. It does not trigger inflammation, unlike necrosis, and is essential for normal
development and tissue homeostasis.
Question 9
A 45-year-old alcoholic presents with severe epigastric pain radiating to the back. Serum lipase
is markedly elevated. Which type of necrosis is occurring in the pancreas?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Fat necrosis
D. Fibrinoid necrosis
Correct Answer: C. Fat necrosis
Rationale: Acute pancreatitis causes release of pancreatic lipases that break down
triglycerides into fatty acids. These fatty acids combine with calcium (saponification) to form fat
