NR507 FINAL EXAM 2026 | NR507 Week 8
Exam | Advanced Pathophysiology | Expected
Q&A | Verified Answers | Chamberlain | Pass
Guaranteed - A+ Graded
Q1. A 68-year-old male with a 40-pack-year smoking history presents with a
chronic cough. A biopsy of his bronchial epithelium reveals columnar epithelial
cells that have been replaced by stratified squamous epithelium. This cellular
adaptation is classified as:
• A. Atrophy
• B. Hypertrophy
• C. Metaplasia
• D. Hyperplasia
Correct Answer: C – Metaplasia is the reversible replacement of one
differentiated cell type by another, often in response to chronic irritation; here,
ciliated columnar epithelium is replaced by stratified squamous epithelium as a
protective adaptation against cigarette smoke. Atrophy involves decreased cell
size, hypertrophy involves increased cell size, and hyperplasia involves increased
cell number—none involve cell type replacement.
Q2. A 45-year-old female marathon runner develops an enlarged left ventricle on
echocardiography. The cardiologist explains this is a physiologic adaptation to
increased workload. This process is best described as:
• A. Pathologic hypertrophy due to pressure overload
• B. Physiologic hypertrophy due to increased demand
• C. Hyperplasia of cardiac myocytes
• D. Metaplasia of myocardial tissue
,Correct Answer: B – Physiologic hypertrophy occurs in response to normal
increased demand, such as exercise, and is characterized by increased cell size
without pathologic signaling; cardiac myocytes are terminally differentiated and do
not undergo hyperplasia, and metaplasia does not occur in muscle tissue.
Q3. A 55-year-old male with chronic hypertension is found to have left ventricular
wall thickening without chamber dilation. At the cellular level, this adaptation
involves increased synthesis of structural proteins and organelles. This is an
example of:
• A. Physiologic hypertrophy
• B. Pathologic hypertrophy
• C. Atrophy
• D. Dysplasia
Correct Answer: B – Pathologic hypertrophy results from abnormal stressors such
as chronic hypertension (pressure overload), leading to increased synthesis of
contractile proteins and sarcomeres in parallel, causing wall thickening; this differs
from physiologic hypertrophy and is associated with eventual decompensation if
the stimulus persists.
Q4. A 62-year-old female presents with endometrial biopsy showing disordered
proliferation with nuclear atypia and loss of normal polarity. The pathologist notes
this is a pre-neoplastic lesion. This cellular alteration is best classified as:
• A. Metaplasia
• B. Anaplasia
• C. Dysplasia
• D. Hyperplasia
Correct Answer: C – Dysplasia is characterized by disordered, dysfunctional cell
growth with nuclear atypia, pleomorphism, and loss of polarity; it represents a pre-
neoplastic change that may progress to carcinoma in situ or invasive cancer,
distinguishing it from the reversible adaptations of metaplasia and hyperplasia.
,Q5. A 70-year-old male with severe atherosclerosis suffers an acute myocardial
infarction. On microscopic examination, the infarcted myocardium shows cell
swelling, loss of architecture, and inflammatory infiltration. The cell death
mechanism in this infarct is primarily:
• A. Apoptosis
• B. Autophagy
• C. Coagulative necrosis
• D. Liquefactive necrosis
Correct Answer: C – Myocardial infarction produces coagulative necrosis,
characterized by denaturation of structural and enzymatic proteins that preserves
tissue architecture temporarily; this differs from liquefactive necrosis (seen in brain
infarcts or abscesses) and apoptosis (programmed cell death without
inflammation).
Q6. A 35-year-old male presents with fever and severe abdominal pain. CT reveals
a pancreatic pseudocyst. Histology of the pancreatic tissue shows enzymatic
digestion of parenchyma, fat saponification, and calcium deposits. The type of
necrosis present is:
• A. Caseous necrosis
• B. Fat necrosis
• C. Fibrinoid necrosis
• D. Gangrenous necrosis
Correct Answer: B – Acute pancreatitis causes fat necrosis through release of
activated lipases that hydrolyze triglycerides into fatty acids, which combine with
calcium to form insoluble soaps (saponification); this is distinct from caseous
necrosis (tuberculosis), fibrinoid necrosis (vasculitis), and gangrenous necrosis
(ischemic tissue).
, Q7. A 28-year-old female with systemic lupus erythematosus has a renal biopsy
showing immune complex deposition in vessel walls with bright pink, amorphous
material. This vascular change represents:
• A. Caseous necrosis
• B. Fat necrosis
• C. Fibrinoid necrosis
• D. Liquefactive necrosis
Correct Answer: C – Fibrinoid necrosis is seen in immune-mediated vascular
damage (e.g., polyarteritis nodosa, SLE, malignant hypertension) where immune
complexes and fibrin deposit in vessel walls, giving a bright pink, amorphous
appearance on H&E stain.
Q8. A 72-year-old diabetic male develops a non-healing ulcer on his great toe. The
toe becomes black, dry, and shrunken. This appearance is characteristic of:
• A. Wet gangrene
• B. Dry gangrene
• C. Gas gangrene
• D. Necrotizing fasciitis
Correct Answer: B – Dry gangrene results from chronic ischemia (often in
diabetics or atherosclerotic patients) with slow tissue death and minimal bacterial
involvement, leading to mummification, black discoloration, and a clear line of
demarcation. Wet gangrene involves superimposed infection with putrefaction.
Q9. A 50-year-old female with a BRCA1 mutation develops breast cancer. The
tumor suppressor gene BRCA1 normally functions to:
• A. Promote cell division
• B. Repair DNA double-strand breaks
• C. Inhibit apoptosis
• D. Activate telomerase
Exam | Advanced Pathophysiology | Expected
Q&A | Verified Answers | Chamberlain | Pass
Guaranteed - A+ Graded
Q1. A 68-year-old male with a 40-pack-year smoking history presents with a
chronic cough. A biopsy of his bronchial epithelium reveals columnar epithelial
cells that have been replaced by stratified squamous epithelium. This cellular
adaptation is classified as:
• A. Atrophy
• B. Hypertrophy
• C. Metaplasia
• D. Hyperplasia
Correct Answer: C – Metaplasia is the reversible replacement of one
differentiated cell type by another, often in response to chronic irritation; here,
ciliated columnar epithelium is replaced by stratified squamous epithelium as a
protective adaptation against cigarette smoke. Atrophy involves decreased cell
size, hypertrophy involves increased cell size, and hyperplasia involves increased
cell number—none involve cell type replacement.
Q2. A 45-year-old female marathon runner develops an enlarged left ventricle on
echocardiography. The cardiologist explains this is a physiologic adaptation to
increased workload. This process is best described as:
• A. Pathologic hypertrophy due to pressure overload
• B. Physiologic hypertrophy due to increased demand
• C. Hyperplasia of cardiac myocytes
• D. Metaplasia of myocardial tissue
,Correct Answer: B – Physiologic hypertrophy occurs in response to normal
increased demand, such as exercise, and is characterized by increased cell size
without pathologic signaling; cardiac myocytes are terminally differentiated and do
not undergo hyperplasia, and metaplasia does not occur in muscle tissue.
Q3. A 55-year-old male with chronic hypertension is found to have left ventricular
wall thickening without chamber dilation. At the cellular level, this adaptation
involves increased synthesis of structural proteins and organelles. This is an
example of:
• A. Physiologic hypertrophy
• B. Pathologic hypertrophy
• C. Atrophy
• D. Dysplasia
Correct Answer: B – Pathologic hypertrophy results from abnormal stressors such
as chronic hypertension (pressure overload), leading to increased synthesis of
contractile proteins and sarcomeres in parallel, causing wall thickening; this differs
from physiologic hypertrophy and is associated with eventual decompensation if
the stimulus persists.
Q4. A 62-year-old female presents with endometrial biopsy showing disordered
proliferation with nuclear atypia and loss of normal polarity. The pathologist notes
this is a pre-neoplastic lesion. This cellular alteration is best classified as:
• A. Metaplasia
• B. Anaplasia
• C. Dysplasia
• D. Hyperplasia
Correct Answer: C – Dysplasia is characterized by disordered, dysfunctional cell
growth with nuclear atypia, pleomorphism, and loss of polarity; it represents a pre-
neoplastic change that may progress to carcinoma in situ or invasive cancer,
distinguishing it from the reversible adaptations of metaplasia and hyperplasia.
,Q5. A 70-year-old male with severe atherosclerosis suffers an acute myocardial
infarction. On microscopic examination, the infarcted myocardium shows cell
swelling, loss of architecture, and inflammatory infiltration. The cell death
mechanism in this infarct is primarily:
• A. Apoptosis
• B. Autophagy
• C. Coagulative necrosis
• D. Liquefactive necrosis
Correct Answer: C – Myocardial infarction produces coagulative necrosis,
characterized by denaturation of structural and enzymatic proteins that preserves
tissue architecture temporarily; this differs from liquefactive necrosis (seen in brain
infarcts or abscesses) and apoptosis (programmed cell death without
inflammation).
Q6. A 35-year-old male presents with fever and severe abdominal pain. CT reveals
a pancreatic pseudocyst. Histology of the pancreatic tissue shows enzymatic
digestion of parenchyma, fat saponification, and calcium deposits. The type of
necrosis present is:
• A. Caseous necrosis
• B. Fat necrosis
• C. Fibrinoid necrosis
• D. Gangrenous necrosis
Correct Answer: B – Acute pancreatitis causes fat necrosis through release of
activated lipases that hydrolyze triglycerides into fatty acids, which combine with
calcium to form insoluble soaps (saponification); this is distinct from caseous
necrosis (tuberculosis), fibrinoid necrosis (vasculitis), and gangrenous necrosis
(ischemic tissue).
, Q7. A 28-year-old female with systemic lupus erythematosus has a renal biopsy
showing immune complex deposition in vessel walls with bright pink, amorphous
material. This vascular change represents:
• A. Caseous necrosis
• B. Fat necrosis
• C. Fibrinoid necrosis
• D. Liquefactive necrosis
Correct Answer: C – Fibrinoid necrosis is seen in immune-mediated vascular
damage (e.g., polyarteritis nodosa, SLE, malignant hypertension) where immune
complexes and fibrin deposit in vessel walls, giving a bright pink, amorphous
appearance on H&E stain.
Q8. A 72-year-old diabetic male develops a non-healing ulcer on his great toe. The
toe becomes black, dry, and shrunken. This appearance is characteristic of:
• A. Wet gangrene
• B. Dry gangrene
• C. Gas gangrene
• D. Necrotizing fasciitis
Correct Answer: B – Dry gangrene results from chronic ischemia (often in
diabetics or atherosclerotic patients) with slow tissue death and minimal bacterial
involvement, leading to mummification, black discoloration, and a clear line of
demarcation. Wet gangrene involves superimposed infection with putrefaction.
Q9. A 50-year-old female with a BRCA1 mutation develops breast cancer. The
tumor suppressor gene BRCA1 normally functions to:
• A. Promote cell division
• B. Repair DNA double-strand breaks
• C. Inhibit apoptosis
• D. Activate telomerase
