1. Cellular Adaptation, Injury, and Death — Hypertrophy vs. hyperplasia;
metaplasia; apoptosis vs. necrosis; irreversible cellular injury; endoplasmic
reticulum swelling and protein synthesis.
2. Fluid, Electrolyte, and Acid-Base Balance — Sodium-potassium ATPase pump
function; extracellular cation predominance; metabolic alkalosis from vomiting;
hyperkalemia in renal failure; anion gap concepts.
3. Genetics and Genetic Disorders — Klinefelter syndrome karyotype; cystic
fibrosis inheritance; neurofibromatosis expressivity; proband identification;
gene imprinting (Prader-Willi).
4. Immunology and Hypersensitivity — Immune-complex glomerular injury (SLE);
anaphylaxis mechanisms; hypersensitivity types; autoantibody-mediated tissue
damage.
5. Hematology — Erythropoietin deficiency anemia in renal disease; iron
deficiency vs. anemia of chronic disease; sickle cell vaso-occlusive crisis;
carbon dioxide transport.
6. Cardiovascular Pathophysiology — Left ventricular hypertrophy from chronic
hypertension; heart failure mechanisms (systolic vs. diastolic); renin-
angiotensin-aldosterone system effects on glomerular filtration; cor pulmonale.
7. Pulmonary Pathophysiology — Respiratory distress syndrome in newborns
(atelectasis); asthma exacerbation; COPD with chronic hypoxia; pulmonary
edema mechanisms.
, 8. Renal Pathophysiology — Acute kidney injury; chronic kidney disease
consequences (anemia, hyperkalemia, metabolic acidosis); nephrotic
syndrome; glomerulonephritis; angiotensin II efferent arteriolar constriction.
9. Endocrine Pathophysiology — Insulin resistance and hyperglycemia; diabetes
mellitus type 2 mechanisms; hormonal regulation of glucose.
10. Neuro and Multi-System Integration — Cerebral edema; increased intracranial
pressure; systemic manifestations of organ failure.
Nr 507 Midterm Exam (Chamberlain) Nr507 Advanced Pathophysiology Week 4
Midterm Exam
250 Detailed Multiple-Choice Questions with Answers
and Rationales
Questions 1–25: Cellular Adaptation, Injury, and Death
1. A patient with long-standing hypertension develops an enlarged left ventricle
due to increased myocardial workload. Which cellular adaptation does this
represent?
,A. Hyperplasia
B. Metaplasia
C. Hypertrophy
D. Dysplasia
Answer: C
Rationale: Cardiac muscle cells are terminally differentiated and cannot undergo
mitosis. Chronic pressure overload stimulates an increase in cell size
(hypertrophy) rather than cell number (hyperplasia). Metaplasia involves
replacement of one cell type with another, and dysplasia refers to disordered
growth. 3
2. A biopsy of the lower esophagus in a patient with chronic acid reflux reveals
replacement of squamous epithelium with columnar epithelium. This finding is
best described as which cellular adaptation?
A. Hypertrophy
B. Metaplasia
C. Atrophy
D. Neoplasia
Answer: B
Rationale: Metaplasia is the reversible replacement of one mature cell type with
another better suited to withstand stress. In Barrett esophagus, chronic acid
, exposure causes squamous epithelium to be replaced by columnar epithelium.
This is not hypertrophy (size increase), atrophy (decrease in size), or neoplasia
(uncontrolled growth). 3
3. Which feature most reliably distinguishes apoptosis from necrosis at the
cellular level?
A. Apoptosis causes cell swelling and membrane rupture
B. Apoptosis elicits a robust inflammatory response
C. Apoptosis involves organized cell shrinkage without inflammation
D. Apoptosis results from ATP depletion and calcium influx
Answer: C
Rationale: Apoptosis is programmed cell death characterized by cell shrinkage,
chromatin condensation, and formation of apoptotic bodies without membrane
rupture or inflammation. Necrosis involves swelling, lysis, and inflammation. ATP
depletion and calcium influx are features of necrotic injury, not apoptosis. 3
4. A cell has reached the "point of no return" following severe ischemic injury.
What pathophysiologic event defines this threshold?
A. Reversible mitochondrial swelling
B. Complete cessation of ATP production with irreversible membrane damage
C. Activation of antioxidant defense mechanisms
D. Temporary reduction in protein synthesis
metaplasia; apoptosis vs. necrosis; irreversible cellular injury; endoplasmic
reticulum swelling and protein synthesis.
2. Fluid, Electrolyte, and Acid-Base Balance — Sodium-potassium ATPase pump
function; extracellular cation predominance; metabolic alkalosis from vomiting;
hyperkalemia in renal failure; anion gap concepts.
3. Genetics and Genetic Disorders — Klinefelter syndrome karyotype; cystic
fibrosis inheritance; neurofibromatosis expressivity; proband identification;
gene imprinting (Prader-Willi).
4. Immunology and Hypersensitivity — Immune-complex glomerular injury (SLE);
anaphylaxis mechanisms; hypersensitivity types; autoantibody-mediated tissue
damage.
5. Hematology — Erythropoietin deficiency anemia in renal disease; iron
deficiency vs. anemia of chronic disease; sickle cell vaso-occlusive crisis;
carbon dioxide transport.
6. Cardiovascular Pathophysiology — Left ventricular hypertrophy from chronic
hypertension; heart failure mechanisms (systolic vs. diastolic); renin-
angiotensin-aldosterone system effects on glomerular filtration; cor pulmonale.
7. Pulmonary Pathophysiology — Respiratory distress syndrome in newborns
(atelectasis); asthma exacerbation; COPD with chronic hypoxia; pulmonary
edema mechanisms.
, 8. Renal Pathophysiology — Acute kidney injury; chronic kidney disease
consequences (anemia, hyperkalemia, metabolic acidosis); nephrotic
syndrome; glomerulonephritis; angiotensin II efferent arteriolar constriction.
9. Endocrine Pathophysiology — Insulin resistance and hyperglycemia; diabetes
mellitus type 2 mechanisms; hormonal regulation of glucose.
10. Neuro and Multi-System Integration — Cerebral edema; increased intracranial
pressure; systemic manifestations of organ failure.
Nr 507 Midterm Exam (Chamberlain) Nr507 Advanced Pathophysiology Week 4
Midterm Exam
250 Detailed Multiple-Choice Questions with Answers
and Rationales
Questions 1–25: Cellular Adaptation, Injury, and Death
1. A patient with long-standing hypertension develops an enlarged left ventricle
due to increased myocardial workload. Which cellular adaptation does this
represent?
,A. Hyperplasia
B. Metaplasia
C. Hypertrophy
D. Dysplasia
Answer: C
Rationale: Cardiac muscle cells are terminally differentiated and cannot undergo
mitosis. Chronic pressure overload stimulates an increase in cell size
(hypertrophy) rather than cell number (hyperplasia). Metaplasia involves
replacement of one cell type with another, and dysplasia refers to disordered
growth. 3
2. A biopsy of the lower esophagus in a patient with chronic acid reflux reveals
replacement of squamous epithelium with columnar epithelium. This finding is
best described as which cellular adaptation?
A. Hypertrophy
B. Metaplasia
C. Atrophy
D. Neoplasia
Answer: B
Rationale: Metaplasia is the reversible replacement of one mature cell type with
another better suited to withstand stress. In Barrett esophagus, chronic acid
, exposure causes squamous epithelium to be replaced by columnar epithelium.
This is not hypertrophy (size increase), atrophy (decrease in size), or neoplasia
(uncontrolled growth). 3
3. Which feature most reliably distinguishes apoptosis from necrosis at the
cellular level?
A. Apoptosis causes cell swelling and membrane rupture
B. Apoptosis elicits a robust inflammatory response
C. Apoptosis involves organized cell shrinkage without inflammation
D. Apoptosis results from ATP depletion and calcium influx
Answer: C
Rationale: Apoptosis is programmed cell death characterized by cell shrinkage,
chromatin condensation, and formation of apoptotic bodies without membrane
rupture or inflammation. Necrosis involves swelling, lysis, and inflammation. ATP
depletion and calcium influx are features of necrotic injury, not apoptosis. 3
4. A cell has reached the "point of no return" following severe ischemic injury.
What pathophysiologic event defines this threshold?
A. Reversible mitochondrial swelling
B. Complete cessation of ATP production with irreversible membrane damage
C. Activation of antioxidant defense mechanisms
D. Temporary reduction in protein synthesis
