N212 Pathophysiology Exam 1 Study Guide
Actual Exam 2026/2027: Complete Exam-Style
Questions with Detailed Rationales | 100%
Verified | Pass Guaranteed – A+ Graded
TABLE OF CONTENTS
Section Topic Questions
Section 1 Cellular Adaptation and Injury Q1 – Q30
Section 2 Inflammation and Tissue Repair Q31 – Q60
Section 3 Fluid and Electrolyte Imbalances Q61 – Q90
Section 4 Acid-Base Balance Disorders Q91 – Q120
Section 5 Genetics and Immune System Basics Q121 – Q150
Section 6 Hemodynamics, Thrombosis, and Shock Q151 – Q160
Instructions: Choose the single best answer. Pass: 80% (128/160) in 180 minutes.
SECTION 1: CELLULAR ADAPTATION AND INJURY (Q1 – Q30)
Question 1 of 160
A 58-year-old man with a 40 pack-year smoking history presents with a persistent
cough and a 15-pound weight loss over three months. Chest CT reveals a 3.2 cm
spiculated mass in the right upper lobe. Biopsy shows sheets of small cells with
scant cytoplasm, hyperchromatic nuclei, and nuclear molding. Which pathologic
,process best describes the initial cellular change that allowed this tumor to
develop?
A. Metaplasia of ciliated columnar epithelium to squamous epithelium
B. Dysplasia with loss of normal maturation and nuclear atypia ✔
C. Hypertrophy of bronchial smooth muscle cells
D. Hyperplasia of goblet cells in the bronchial mucosa
Correct Answer: B
Rationale: Dysplasia represents disordered epithelial growth with loss of normal
maturation, nuclear pleomorphism, and increased mitotic activity, which is the
recognized precursor lesion for invasive carcinoma in the respiratory tract.
Metaplasia (A) is a reversible change and does not itself constitute neoplastic
transformation.
Question 2 of 160
A 72-year-old woman with poorly controlled hypertension is found to have left
ventricular wall thickness of 1.4 cm on echocardiogram (normal <1.1 cm). She
reports mild dyspnea on exertion but denies chest pain. Which cellular adaptation
is primarily responsible for the increased myocardial mass?
A. Hyperplasia of cardiac myocytes due to chronic volume overload
B. Hypertrophy of existing cardiac myocytes in response to increased
afterload ✔
C. Metaplasia of cardiac myocytes to skeletal muscle fibers
D. Atrophy of cardiac myocytes with compensatory fibroblast proliferation
Correct Answer: B
Rationale: Cardiac myocytes are terminally differentiated and respond to chronic
pressure overload by increasing individual cell size (hypertrophy). Hyperplasia
does not occur in adult cardiac muscle.
Question 3 of 160
A 45-year-old man with chronic alcohol use disorder presents with epigastric pain
and steatorrhea. CT shows pancreatic calcifications and ductal dilation. Histology
reveals abundant fibrous tissue replacing normal acinar architecture with scattered
,residual islets. Which process best describes the irreversible loss of functional
parenchymal tissue in this patient's pancreas?
A. Apoptosis of acinar cells triggered by chronic ethanol exposure
B. Coagulative necrosis following acute vascular compromise
C. Atrophy of acinar cells with replacement by adipose tissue
D. Chronic injury leading to parenchymal loss and fibrosis ✔
Correct Answer: D
Rationale: Chronic pancreatitis results from repeated injury causing irreversible
acinar destruction and progressive fibrosis. The damage is permanent and increases
pancreatic cancer risk.
Question 4 of 160
A 34-year-old woman is brought to the emergency department after a motor
vehicle collision. She has a Glasgow Coma Scale score of 6 and a fixed, dilated
right pupil. CT head shows a large right-sided epidural hematoma with 8 mm
midline shift. Which mechanism of cellular injury is most immediately threatening
her neuronal viability?
A. Ischemic hypoxia from compression of the right middle cerebral artery ✔
B. Free radical generation from reperfusion injury
C. Toxin-mediated inhibition of mitochondrial cytochrome oxidase
D. Osmotic lysis from intracellular water accumulation
Correct Answer: A
Rationale: The expanding hematoma compresses cerebral arteries, causing
ischemic hypoxia. Neurons are highly vulnerable to oxygen deprivation, with
irreversible injury beginning within minutes.
Question 5 of 160
A 62-year-old man with a history of chronic kidney disease stage 4 presents with
fatigue and pallor. Laboratory studies show hemoglobin 8.2 g/dL, MCV 78 fL,
serum ferritin 520 ng/mL, and transferrin saturation 18%. Bone marrow biopsy
shows normocellular marrow with adequate iron stores but decreased erythroid
, precursors. Which cellular adaptation best explains the reduced red blood cell
production?
A. Hypertrophy of erythroid progenitors
B. Metaplasia of myeloid to erythroid lineage
C. Hyperplasia of megakaryocytes
D. Atrophy of erythropoietin-sensitive stem cells due to reduced EPO
signaling ✔
Correct Answer: D
Rationale: In chronic kidney disease, reduced erythropoietin production leads to
functional atrophy of erythroid precursors. This is a reversible adaptation if EPO is
replaced.
Question 6 of 160
A 28-year-old woman who recently started taking valproic acid for seizures
develops nausea, vomiting, and jaundice. AST is 3400 U/L, ALT 2800 U/L, and
total bilirubin 6.2 mg/dL. Liver biopsy shows centrilobular necrosis with
ballooning degeneration of hepatocytes and scattered apoptotic bodies. What is the
most likely mechanism of cell death in this patient?
A. Coagulative necrosis from direct vascular thrombosis
B. Apoptosis and necrosis from toxic metabolite accumulation ✔
C. Caseous necrosis due to granulomatous inflammation
D. Fat necrosis from release of pancreatic enzymes
Correct Answer: B
Rationale: Valproic acid hepatotoxicity involves mitochondrial injury and
depletion of glutathione, leading to both apoptotic and necrotic cell death in zone 3
of the hepatic acinus.
Question 7 of 160
A 67-year-old man with benign prostatic hyperplasia undergoes transurethral
resection. The pathologist reports "chips" of prostatic tissue showing small,
crowded glands with nuclear enlargement and prominent nucleoli but no stromal
invasion. What is the correct interpretation of these findings?
Actual Exam 2026/2027: Complete Exam-Style
Questions with Detailed Rationales | 100%
Verified | Pass Guaranteed – A+ Graded
TABLE OF CONTENTS
Section Topic Questions
Section 1 Cellular Adaptation and Injury Q1 – Q30
Section 2 Inflammation and Tissue Repair Q31 – Q60
Section 3 Fluid and Electrolyte Imbalances Q61 – Q90
Section 4 Acid-Base Balance Disorders Q91 – Q120
Section 5 Genetics and Immune System Basics Q121 – Q150
Section 6 Hemodynamics, Thrombosis, and Shock Q151 – Q160
Instructions: Choose the single best answer. Pass: 80% (128/160) in 180 minutes.
SECTION 1: CELLULAR ADAPTATION AND INJURY (Q1 – Q30)
Question 1 of 160
A 58-year-old man with a 40 pack-year smoking history presents with a persistent
cough and a 15-pound weight loss over three months. Chest CT reveals a 3.2 cm
spiculated mass in the right upper lobe. Biopsy shows sheets of small cells with
scant cytoplasm, hyperchromatic nuclei, and nuclear molding. Which pathologic
,process best describes the initial cellular change that allowed this tumor to
develop?
A. Metaplasia of ciliated columnar epithelium to squamous epithelium
B. Dysplasia with loss of normal maturation and nuclear atypia ✔
C. Hypertrophy of bronchial smooth muscle cells
D. Hyperplasia of goblet cells in the bronchial mucosa
Correct Answer: B
Rationale: Dysplasia represents disordered epithelial growth with loss of normal
maturation, nuclear pleomorphism, and increased mitotic activity, which is the
recognized precursor lesion for invasive carcinoma in the respiratory tract.
Metaplasia (A) is a reversible change and does not itself constitute neoplastic
transformation.
Question 2 of 160
A 72-year-old woman with poorly controlled hypertension is found to have left
ventricular wall thickness of 1.4 cm on echocardiogram (normal <1.1 cm). She
reports mild dyspnea on exertion but denies chest pain. Which cellular adaptation
is primarily responsible for the increased myocardial mass?
A. Hyperplasia of cardiac myocytes due to chronic volume overload
B. Hypertrophy of existing cardiac myocytes in response to increased
afterload ✔
C. Metaplasia of cardiac myocytes to skeletal muscle fibers
D. Atrophy of cardiac myocytes with compensatory fibroblast proliferation
Correct Answer: B
Rationale: Cardiac myocytes are terminally differentiated and respond to chronic
pressure overload by increasing individual cell size (hypertrophy). Hyperplasia
does not occur in adult cardiac muscle.
Question 3 of 160
A 45-year-old man with chronic alcohol use disorder presents with epigastric pain
and steatorrhea. CT shows pancreatic calcifications and ductal dilation. Histology
reveals abundant fibrous tissue replacing normal acinar architecture with scattered
,residual islets. Which process best describes the irreversible loss of functional
parenchymal tissue in this patient's pancreas?
A. Apoptosis of acinar cells triggered by chronic ethanol exposure
B. Coagulative necrosis following acute vascular compromise
C. Atrophy of acinar cells with replacement by adipose tissue
D. Chronic injury leading to parenchymal loss and fibrosis ✔
Correct Answer: D
Rationale: Chronic pancreatitis results from repeated injury causing irreversible
acinar destruction and progressive fibrosis. The damage is permanent and increases
pancreatic cancer risk.
Question 4 of 160
A 34-year-old woman is brought to the emergency department after a motor
vehicle collision. She has a Glasgow Coma Scale score of 6 and a fixed, dilated
right pupil. CT head shows a large right-sided epidural hematoma with 8 mm
midline shift. Which mechanism of cellular injury is most immediately threatening
her neuronal viability?
A. Ischemic hypoxia from compression of the right middle cerebral artery ✔
B. Free radical generation from reperfusion injury
C. Toxin-mediated inhibition of mitochondrial cytochrome oxidase
D. Osmotic lysis from intracellular water accumulation
Correct Answer: A
Rationale: The expanding hematoma compresses cerebral arteries, causing
ischemic hypoxia. Neurons are highly vulnerable to oxygen deprivation, with
irreversible injury beginning within minutes.
Question 5 of 160
A 62-year-old man with a history of chronic kidney disease stage 4 presents with
fatigue and pallor. Laboratory studies show hemoglobin 8.2 g/dL, MCV 78 fL,
serum ferritin 520 ng/mL, and transferrin saturation 18%. Bone marrow biopsy
shows normocellular marrow with adequate iron stores but decreased erythroid
, precursors. Which cellular adaptation best explains the reduced red blood cell
production?
A. Hypertrophy of erythroid progenitors
B. Metaplasia of myeloid to erythroid lineage
C. Hyperplasia of megakaryocytes
D. Atrophy of erythropoietin-sensitive stem cells due to reduced EPO
signaling ✔
Correct Answer: D
Rationale: In chronic kidney disease, reduced erythropoietin production leads to
functional atrophy of erythroid precursors. This is a reversible adaptation if EPO is
replaced.
Question 6 of 160
A 28-year-old woman who recently started taking valproic acid for seizures
develops nausea, vomiting, and jaundice. AST is 3400 U/L, ALT 2800 U/L, and
total bilirubin 6.2 mg/dL. Liver biopsy shows centrilobular necrosis with
ballooning degeneration of hepatocytes and scattered apoptotic bodies. What is the
most likely mechanism of cell death in this patient?
A. Coagulative necrosis from direct vascular thrombosis
B. Apoptosis and necrosis from toxic metabolite accumulation ✔
C. Caseous necrosis due to granulomatous inflammation
D. Fat necrosis from release of pancreatic enzymes
Correct Answer: B
Rationale: Valproic acid hepatotoxicity involves mitochondrial injury and
depletion of glutathione, leading to both apoptotic and necrotic cell death in zone 3
of the hepatic acinus.
Question 7 of 160
A 67-year-old man with benign prostatic hyperplasia undergoes transurethral
resection. The pathologist reports "chips" of prostatic tissue showing small,
crowded glands with nuclear enlargement and prominent nucleoli but no stromal
invasion. What is the correct interpretation of these findings?
