NR507 / NR 507 Advanced
Pathophysiology Midterm Exam Actual
Exam 2026/2027 – Complete Exam-Style
Questions | Detailed Rationales – Pass
Guaranteed – A+ Graded,
Q1. A 68-year-old male with a 50-pack-year smoking history undergoes
a lung biopsy. Pathological examination reveals disorganized cellular
architecture, pleomorphic nuclei, and loss of normal differentiation.
These findings are characteristic of:
• A) Metaplasia
• B) Hyperplasia
• C) Dysplasia
• D) Anaplasia
Correct ,,,answer,,,,: D) Anaplasia
Rationale: Anaplasia refers to the loss of cellular differentiation and
architectural disorganization characteristic of malignant neoplasms.
Features include pleomorphism (variation in size/shape), hyperchromatic
nuclei, and abnormal mitotic figures.
Q2. Which form of cellular adaptation occurs when normal columnar
ciliated epithelial cells in the airways are replaced by stratified
squamous epithelial cells in a chronic smoker?
• A) Atrophy
, • B) Hyperplasia
• C) Metaplasia
• D) Dysplasia
Correct ,,,answer,,,,: C) Metaplasia
Rationale: Metaplasia is the reversible replacement of one mature cell
type by another mature cell type, typically to withstand chronic
environmental stress. In smokers, columnar epithelium is replaced by
stratified squamous epithelium.
Q3. During ischemia, ATP depletion leads to failure of the Na+/K+
ATPase pump. Which cellular event occurs immediately after this
failure?
• A) Cellular shrinkage
• B) Mitochondrial calcium efflux
• C) Sodium accumulation and cellular swelling
• D) Activation of catalase
Correct ,,,answer,,,,: C) Sodium accumulation and cellular swelling
Rationale: The Na+/K+ ATPase pump maintains sodium and potassium
gradients. ATP depletion causes pump failure, allowing sodium to
accumulate intracellularly. Water follows sodium osmotically, causing
cellular swelling—a hallmark of reversible cell injury.
Q4. A 70-year-old male with benign prostatic hyperplasia (BPH) has
urinary symptoms due to increased cell number in the prostate. This
adaptation is:
• A) Physiologic hyperplasia
• B) Pathologic hyperplasia
• C) Compensatory hyperplasia
, • D) Hormonal metaplasia
Correct ,,,answer,,,,: B) Pathologic hyperplasia
Rationale: BPH is an example of pathologic hyperplasia driven by
androgen stimulation. While abnormal, it remains reversible and non-
neoplastic, distinguishing it from dysplasia or neoplasia.
Q5. Which cellular change is associated with irreversible cell injury
and indicates necrosis rather than apoptosis?
• A) Chromatin condensation
• B) Membrane blebbing
• C) Karyorrhexis
• D) Formation of apoptotic bodies
Correct ,,,answer,,,,: C) Karyorrhexis
Rationale: Karyorrhexis (nuclear fragmentation) is a feature of necrosis.
Apoptosis involves chromatin condensation and nuclear fragmentation
into apoptotic bodies without inflammation. Necrosis always triggers an
inflammatory response.
Q6. Which of the following is a hallmark of reversible cell injury?
• A) Karyolysis
• B) Cell membrane rupture
• C) Cellular swelling
• D) Mitochondrial calcification
Correct ,,,answer,,,,: C) Cellular swelling
Rationale: Reversible cell injury is characterized by cellular swelling due
to failure of ion pumps in the plasma membrane. This occurs before
irreversible changes like karyolysis or membrane rupture develop.
, Q7. Which of the following is an example of physiologic hypertrophy?
• A) Left ventricular hypertrophy in hypertension
• B) Uterine enlargement during pregnancy
• C) Benign prostatic hyperplasia
• D) Barrett esophagus
Correct ,,,answer,,,,: B) Uterine enlargement during pregnancy
Rationale: Uterine enlargement during pregnancy results from both
hypertrophy (cell enlargement) and hyperplasia (increased cell number)
in response to hormonal stimulation—a normal physiologic process.
Q8. What is the functional impact of increased afterload on the heart?
• A) Decreased preload
• B) Increased stroke volume
• C) Increased workload on the ventricles
• D) Decreased systemic vascular resistance
Correct ,,,answer,,,,: C) Increased workload on the ventricles
Rationale: Afterload is the resistance or pressure against which the
ventricles must pump to eject blood. Increased afterload (e.g., from
hypertension) directly increases cardiac workload, leading to
compensatory hypertrophy.
Q9. A pathologist notes brownish granular pigment in hepatocytes of a
patient with hereditary hemochromatosis. This pigment is:
• A) Lipofuscin
• B) Hemosiderin
• C) Bilirubin
• D) Melanin
Pathophysiology Midterm Exam Actual
Exam 2026/2027 – Complete Exam-Style
Questions | Detailed Rationales – Pass
Guaranteed – A+ Graded,
Q1. A 68-year-old male with a 50-pack-year smoking history undergoes
a lung biopsy. Pathological examination reveals disorganized cellular
architecture, pleomorphic nuclei, and loss of normal differentiation.
These findings are characteristic of:
• A) Metaplasia
• B) Hyperplasia
• C) Dysplasia
• D) Anaplasia
Correct ,,,answer,,,,: D) Anaplasia
Rationale: Anaplasia refers to the loss of cellular differentiation and
architectural disorganization characteristic of malignant neoplasms.
Features include pleomorphism (variation in size/shape), hyperchromatic
nuclei, and abnormal mitotic figures.
Q2. Which form of cellular adaptation occurs when normal columnar
ciliated epithelial cells in the airways are replaced by stratified
squamous epithelial cells in a chronic smoker?
• A) Atrophy
, • B) Hyperplasia
• C) Metaplasia
• D) Dysplasia
Correct ,,,answer,,,,: C) Metaplasia
Rationale: Metaplasia is the reversible replacement of one mature cell
type by another mature cell type, typically to withstand chronic
environmental stress. In smokers, columnar epithelium is replaced by
stratified squamous epithelium.
Q3. During ischemia, ATP depletion leads to failure of the Na+/K+
ATPase pump. Which cellular event occurs immediately after this
failure?
• A) Cellular shrinkage
• B) Mitochondrial calcium efflux
• C) Sodium accumulation and cellular swelling
• D) Activation of catalase
Correct ,,,answer,,,,: C) Sodium accumulation and cellular swelling
Rationale: The Na+/K+ ATPase pump maintains sodium and potassium
gradients. ATP depletion causes pump failure, allowing sodium to
accumulate intracellularly. Water follows sodium osmotically, causing
cellular swelling—a hallmark of reversible cell injury.
Q4. A 70-year-old male with benign prostatic hyperplasia (BPH) has
urinary symptoms due to increased cell number in the prostate. This
adaptation is:
• A) Physiologic hyperplasia
• B) Pathologic hyperplasia
• C) Compensatory hyperplasia
, • D) Hormonal metaplasia
Correct ,,,answer,,,,: B) Pathologic hyperplasia
Rationale: BPH is an example of pathologic hyperplasia driven by
androgen stimulation. While abnormal, it remains reversible and non-
neoplastic, distinguishing it from dysplasia or neoplasia.
Q5. Which cellular change is associated with irreversible cell injury
and indicates necrosis rather than apoptosis?
• A) Chromatin condensation
• B) Membrane blebbing
• C) Karyorrhexis
• D) Formation of apoptotic bodies
Correct ,,,answer,,,,: C) Karyorrhexis
Rationale: Karyorrhexis (nuclear fragmentation) is a feature of necrosis.
Apoptosis involves chromatin condensation and nuclear fragmentation
into apoptotic bodies without inflammation. Necrosis always triggers an
inflammatory response.
Q6. Which of the following is a hallmark of reversible cell injury?
• A) Karyolysis
• B) Cell membrane rupture
• C) Cellular swelling
• D) Mitochondrial calcification
Correct ,,,answer,,,,: C) Cellular swelling
Rationale: Reversible cell injury is characterized by cellular swelling due
to failure of ion pumps in the plasma membrane. This occurs before
irreversible changes like karyolysis or membrane rupture develop.
, Q7. Which of the following is an example of physiologic hypertrophy?
• A) Left ventricular hypertrophy in hypertension
• B) Uterine enlargement during pregnancy
• C) Benign prostatic hyperplasia
• D) Barrett esophagus
Correct ,,,answer,,,,: B) Uterine enlargement during pregnancy
Rationale: Uterine enlargement during pregnancy results from both
hypertrophy (cell enlargement) and hyperplasia (increased cell number)
in response to hormonal stimulation—a normal physiologic process.
Q8. What is the functional impact of increased afterload on the heart?
• A) Decreased preload
• B) Increased stroke volume
• C) Increased workload on the ventricles
• D) Decreased systemic vascular resistance
Correct ,,,answer,,,,: C) Increased workload on the ventricles
Rationale: Afterload is the resistance or pressure against which the
ventricles must pump to eject blood. Increased afterload (e.g., from
hypertension) directly increases cardiac workload, leading to
compensatory hypertrophy.
Q9. A pathologist notes brownish granular pigment in hepatocytes of a
patient with hereditary hemochromatosis. This pigment is:
• A) Lipofuscin
• B) Hemosiderin
• C) Bilirubin
• D) Melanin
