NURS 6501
Advanced Pathophysiology
Midterm Examination
4 Versions | 300 Total Questions | Complete Solutions
2026-2027 Walden University Curriculum Alignment
Aligned with FNP, AGNP, DNP, and MSN Competencies
Board Exam Preparation (AANP, ANCC)
Each Version: 75 Questions (Multiple Choice, A-D)
Cognitive Levels: 25% Recall | 55% Application | 20% Analysis
Question Types: 70% Scenario-Based | 20% Direct Recall | 10% Integrated Case Analysis
Content Coverage Across All Versions:
Cellular Biology | Membrane Transport | Genetics | Immunology
Fluid/Electrolyte/Acid-Base | Endocrine | Cardiovascular
Respiratory/Renal/Hematologic | Integrated Case Scenarios
All 300 questions are unique across all four versions with no duplicates.
NURS 6501 Advanced Pathophysiology Midterm | Page 1
, VERSION 1
Section 1: Cellular Biology, Adaptation, and Injury
Q1: A 68-year-old patient with chronic obstructive pulmonary disease presents with muscle wasting and decreased muscle mass in
the lower extremities. Which cellular adaptation best describes this finding?
A. Hypertrophy
B. Hyperplasia
C. Atrophy [CORRECT]
D. Metaplasia
Correct Answer: C
Rationale: Atrophy is a decrease in cell size and number due to reduced workload, inadequate nutrition, or decreased neurologic or hormonal
stimulation. Chronic disuse from COPD-related immobility leads to skeletal muscle atrophy.
Q2: A 45-year-old male with a 20-year history of hypertension is found to have an enlarged left ventricle on echocardiogram. Which
cellular adaptation has occurred in the myocardial cells?
A. Hyperplasia
B. Hypertrophy [CORRECT]
C. Metaplasia
D. Dysplasia
Correct Answer: B
Rationale: Hypertrophy is an increase in cell size due to increased mechanical workload or hormonal stimulation. The myocardium adapts to
chronic pressure overload from hypertension by enlarging individual cardiomyocytes to maintain cardiac output.
Q3: A 52-year-old woman with a long history of gastroesophageal reflux disease undergoes an endoscopy that reveals columnar
epithelium replacing the normal stratified squamous epithelium in the distal esophagus. This finding is best described as:
A. Dysplasia
B. Hyperplasia
C. Metaplasia [CORRECT]
D. Anaplasia
Correct Answer: C
Rationale: Metaplasia is the reversible replacement of one differentiated cell type by another in response to chronic irritation or injury. Barrett
esophagus represents squamous-to-columnar metaplasia driven by chronic acid exposure.
Q4: A 35-year-old woman has a Pap smear showing abnormal cells with disorganized growth, variation in nuclear size, and
increased nuclear-to-cytoplasmic ratio, but the basement membrane remains intact. This finding is classified as:
A. Metaplasia
B. Hyperplasia
C. Dysplasia [CORRECT]
D. Anaplasia
Correct Answer: C
Rationale: Dysplasia is an abnormal change in the size, shape, and organization of mature cells, often considered a preneoplastic lesion. The intact
basement membrane distinguishes dysplasia from invasive carcinoma.
Q5: A 70-year-old patient experiences an acute myocardial infarction. Within hours, myocardial cells show swelling of the
endoplasmic reticulum and mitochondria, but the cells have not yet undergone membrane rupture. This stage of injury is best
classified as:
A. Irreversible injury with coagulative necrosis
B. Reversible cell injury [CORRECT]
C. Apoptotic cell death
D. Liquefactive necrosis
Correct Answer: B
NURS 6501 Advanced Pathophysiology Midterm | Page 2
,Rationale: Reversible cell injury is characterized by cellular swelling, ER distension, and mitochondrial swelling due to ATP depletion, but the
plasma membrane remains intact. If the ischemic insult is corrected, cells can recover to normal function.
Q6: A patient with severe peripheral vascular disease develops a gangrenous toe that appears dry, shriveled, and dark brown. Which
type of necrosis is most likely present?
A. Liquefactive necrosis
B. Coagulative necrosis [CORRECT]
C. Fat necrosis
D. Caseous necrosis
Correct Answer: B
Rationale: Coagulative necrosis occurs most commonly from ischemic injury in all tissues except the brain. The necrotic tissue maintains its
architectural outline but appears firm and dark, characteristic of dry gangrene in vascular disease.
Q7: A 28-year-old patient with a brain abscess presents with a focal area of liquefied tissue. The necrotic debris has been
transformed into a viscous, pus-like fluid. Which type of necrosis predominates in this condition?
A. Coagulative necrosis
B. Liquefactive necrosis [CORRECT]
C. Caseous necrosis
D. Fat necrosis
Correct Answer: B
Rationale: Liquefactive necrosis is characteristic of bacterial and fungal infections, particularly in the brain, where the necrotic tissue is completely
digested by hydrolytic enzymes into a liquid mass. Brain tissue is especially susceptible due to its high lipid content and lack of supporting stroma.
Q8: A pathologist examines a biopsy from a patient with tuberculosis and notes a granuloma with a central area of granular,
cheese-like debris surrounded by epithelioid macrophages and lymphocytes. This necrotic pattern is classified as:
A. Liquefactive necrosis
B. Coagulative necrosis
C. Caseous necrosis [CORRECT]
D. Fat necrosis
Correct Answer: C
Rationale: Caseous necrosis is a distinctive form of necrosis seen in granulomatous diseases such as tuberculosis. The term 'caseous' (cheese-like)
describes the gross appearance of the necrotic center of tuberculous granulomas, which results from a combination of coagulative and liquefactive
necrosis.
Q9: A researcher studying cellular injury finds that cells exposed to ionizing radiation show DNA fragmentation, cell shrinkage, and
formation of cytoplasmic membrane blebs without an associated inflammatory response. Which cell death pathway is most likely
activated?
A. Necrosis
B. Apoptosis [CORRECT]
C. Pyroptosis
D. Ferroptosis
Correct Answer: B
Rationale: Apoptosis is programmed cell death characterized by cell shrinkage, chromatin condensation, DNA fragmentation, and membrane
blebbing without inflammation. It is an energy-dependent process that can be triggered by radiation-induced DNA damage through intrinsic
(mitochondrial) pathways.
Q10: A 55-year-old patient with acute pancreatitis develops periumbilical discoloration and is found to have areas of saponified fat
in the peripancreatic tissue. The calcium salts deposited in these areas form soap-like complexes. This necrotic process is best
described as:
A. Coagulative necrosis
B. Liquefactive necrosis
C. Fat necrosis [CORRECT]
D. Fibrinoid necrosis
Correct Answer: C
NURS 6501 Advanced Pathophysiology Midterm | Page 3
, Rationale: Fat necrosis occurs when lipases released from injured pancreatic cells hydrolyze triglycerides into free fatty acids, which then combine
with calcium to form insoluble calcium soaps (saponification). This process is characteristic of acute pancreatitis and appears as chalky white
deposits on gross examination.
Q11: A 60-year-old patient with chronic hepatitis C infection has a liver biopsy showing hepatocyte injury with accumulation of free
radicals and lipid peroxidation products. Which organelle is primarily responsible for generating the reactive oxygen species
contributing to this injury?
A. Lysosomes
B. Peroxisomes [CORRECT]
C. Endoplasmic reticulum
D. Golgi apparatus
Correct Answer: B
Rationale: Peroxisomes generate hydrogen peroxide and other reactive oxygen species as byproducts of fatty acid oxidation and detoxification
reactions. In chronic liver disease, excessive peroxisomal activity contributes to oxidative stress, lipid peroxidation of cellular membranes, and
progressive hepatocellular injury.
Q12: A 78-year-old patient demonstrates cellular aging changes including shortened telomeres, accumulated lipofuscin pigment, and
decreased DNA repair capacity. Which mechanism best explains the role of telomeres in cellular aging?
A. Telomeres activate oncogene expression with each cell division
B. Telomeres shorten with each cell division, eventually triggering replicative senescence [CORRECT]
C. Telomeres increase in length, causing chromosomal instability
D. Telomeres prevent mitochondrial DNA damage during oxidative stress
Correct Answer: B
Rationale: Telomeres are protective nucleotide sequences at chromosome ends that shorten with each round of cell division. When telomeres reach a
critically short length, they trigger DNA damage responses that lead to replicative senescence or apoptosis, representing a key mechanism of
cellular aging.
Section 2: Membrane Transport and Action Potentials
Q13: A nursing student is reviewing the Na+/K+ ATPase pump. Which statement accurately describes the pump's electrogenic
activity?
A. It moves 3 Na+ ions into the cell and 2 K+ ions out of the cell
B. It moves 3 Na+ ions out of the cell and 2 K+ ions into the cell, creating a net negative intracellular charge
[CORRECT]
C. It moves equal numbers of Na+ and K+ ions in opposite directions, making it electrically neutral
D. It moves 2 Na+ ions out of the cell and 3 K+ ions into the cell, creating a net positive intracellular charge
Correct Answer: B
Rationale: The Na+/K+ ATPase pump is electrogenic because it extrudes 3 Na+ ions for every 2 K+ ions imported, resulting in a net loss of one
positive charge from the intracellular space per cycle. This contributes to the resting membrane potential of approximately -70 to -90 mV.
Q14: A 25-year-old patient requires intravenous glucose supplementation. The nurse knows that glucose is transported across the
intestinal epithelium against its concentration gradient using the energy from Na+ moving down its electrochemical gradient. This
transport mechanism is best described as:
A. Primary active transport
B. Secondary active transport (symport) [CORRECT]
C. Secondary active transport (antiport)
D. Facilitated diffusion
Correct Answer: B
Rationale: The Na+-glucose cotransporter (SGLT) in the intestinal epithelium uses secondary active transport via symport, meaning both Na+ and
glucose move in the same direction across the membrane. The energy comes from the Na+ concentration gradient maintained by the Na+/K+
ATPase pump.
Q15: During a neuroscience lecture, the instructor describes the phase of the action potential in which voltage-gated Na+ channels
rapidly open, allowing Na+ to rush into the cell and causing the membrane potential to become positive. Which phase is being
described?
NURS 6501 Advanced Pathophysiology Midterm | Page 4
Advanced Pathophysiology
Midterm Examination
4 Versions | 300 Total Questions | Complete Solutions
2026-2027 Walden University Curriculum Alignment
Aligned with FNP, AGNP, DNP, and MSN Competencies
Board Exam Preparation (AANP, ANCC)
Each Version: 75 Questions (Multiple Choice, A-D)
Cognitive Levels: 25% Recall | 55% Application | 20% Analysis
Question Types: 70% Scenario-Based | 20% Direct Recall | 10% Integrated Case Analysis
Content Coverage Across All Versions:
Cellular Biology | Membrane Transport | Genetics | Immunology
Fluid/Electrolyte/Acid-Base | Endocrine | Cardiovascular
Respiratory/Renal/Hematologic | Integrated Case Scenarios
All 300 questions are unique across all four versions with no duplicates.
NURS 6501 Advanced Pathophysiology Midterm | Page 1
, VERSION 1
Section 1: Cellular Biology, Adaptation, and Injury
Q1: A 68-year-old patient with chronic obstructive pulmonary disease presents with muscle wasting and decreased muscle mass in
the lower extremities. Which cellular adaptation best describes this finding?
A. Hypertrophy
B. Hyperplasia
C. Atrophy [CORRECT]
D. Metaplasia
Correct Answer: C
Rationale: Atrophy is a decrease in cell size and number due to reduced workload, inadequate nutrition, or decreased neurologic or hormonal
stimulation. Chronic disuse from COPD-related immobility leads to skeletal muscle atrophy.
Q2: A 45-year-old male with a 20-year history of hypertension is found to have an enlarged left ventricle on echocardiogram. Which
cellular adaptation has occurred in the myocardial cells?
A. Hyperplasia
B. Hypertrophy [CORRECT]
C. Metaplasia
D. Dysplasia
Correct Answer: B
Rationale: Hypertrophy is an increase in cell size due to increased mechanical workload or hormonal stimulation. The myocardium adapts to
chronic pressure overload from hypertension by enlarging individual cardiomyocytes to maintain cardiac output.
Q3: A 52-year-old woman with a long history of gastroesophageal reflux disease undergoes an endoscopy that reveals columnar
epithelium replacing the normal stratified squamous epithelium in the distal esophagus. This finding is best described as:
A. Dysplasia
B. Hyperplasia
C. Metaplasia [CORRECT]
D. Anaplasia
Correct Answer: C
Rationale: Metaplasia is the reversible replacement of one differentiated cell type by another in response to chronic irritation or injury. Barrett
esophagus represents squamous-to-columnar metaplasia driven by chronic acid exposure.
Q4: A 35-year-old woman has a Pap smear showing abnormal cells with disorganized growth, variation in nuclear size, and
increased nuclear-to-cytoplasmic ratio, but the basement membrane remains intact. This finding is classified as:
A. Metaplasia
B. Hyperplasia
C. Dysplasia [CORRECT]
D. Anaplasia
Correct Answer: C
Rationale: Dysplasia is an abnormal change in the size, shape, and organization of mature cells, often considered a preneoplastic lesion. The intact
basement membrane distinguishes dysplasia from invasive carcinoma.
Q5: A 70-year-old patient experiences an acute myocardial infarction. Within hours, myocardial cells show swelling of the
endoplasmic reticulum and mitochondria, but the cells have not yet undergone membrane rupture. This stage of injury is best
classified as:
A. Irreversible injury with coagulative necrosis
B. Reversible cell injury [CORRECT]
C. Apoptotic cell death
D. Liquefactive necrosis
Correct Answer: B
NURS 6501 Advanced Pathophysiology Midterm | Page 2
,Rationale: Reversible cell injury is characterized by cellular swelling, ER distension, and mitochondrial swelling due to ATP depletion, but the
plasma membrane remains intact. If the ischemic insult is corrected, cells can recover to normal function.
Q6: A patient with severe peripheral vascular disease develops a gangrenous toe that appears dry, shriveled, and dark brown. Which
type of necrosis is most likely present?
A. Liquefactive necrosis
B. Coagulative necrosis [CORRECT]
C. Fat necrosis
D. Caseous necrosis
Correct Answer: B
Rationale: Coagulative necrosis occurs most commonly from ischemic injury in all tissues except the brain. The necrotic tissue maintains its
architectural outline but appears firm and dark, characteristic of dry gangrene in vascular disease.
Q7: A 28-year-old patient with a brain abscess presents with a focal area of liquefied tissue. The necrotic debris has been
transformed into a viscous, pus-like fluid. Which type of necrosis predominates in this condition?
A. Coagulative necrosis
B. Liquefactive necrosis [CORRECT]
C. Caseous necrosis
D. Fat necrosis
Correct Answer: B
Rationale: Liquefactive necrosis is characteristic of bacterial and fungal infections, particularly in the brain, where the necrotic tissue is completely
digested by hydrolytic enzymes into a liquid mass. Brain tissue is especially susceptible due to its high lipid content and lack of supporting stroma.
Q8: A pathologist examines a biopsy from a patient with tuberculosis and notes a granuloma with a central area of granular,
cheese-like debris surrounded by epithelioid macrophages and lymphocytes. This necrotic pattern is classified as:
A. Liquefactive necrosis
B. Coagulative necrosis
C. Caseous necrosis [CORRECT]
D. Fat necrosis
Correct Answer: C
Rationale: Caseous necrosis is a distinctive form of necrosis seen in granulomatous diseases such as tuberculosis. The term 'caseous' (cheese-like)
describes the gross appearance of the necrotic center of tuberculous granulomas, which results from a combination of coagulative and liquefactive
necrosis.
Q9: A researcher studying cellular injury finds that cells exposed to ionizing radiation show DNA fragmentation, cell shrinkage, and
formation of cytoplasmic membrane blebs without an associated inflammatory response. Which cell death pathway is most likely
activated?
A. Necrosis
B. Apoptosis [CORRECT]
C. Pyroptosis
D. Ferroptosis
Correct Answer: B
Rationale: Apoptosis is programmed cell death characterized by cell shrinkage, chromatin condensation, DNA fragmentation, and membrane
blebbing without inflammation. It is an energy-dependent process that can be triggered by radiation-induced DNA damage through intrinsic
(mitochondrial) pathways.
Q10: A 55-year-old patient with acute pancreatitis develops periumbilical discoloration and is found to have areas of saponified fat
in the peripancreatic tissue. The calcium salts deposited in these areas form soap-like complexes. This necrotic process is best
described as:
A. Coagulative necrosis
B. Liquefactive necrosis
C. Fat necrosis [CORRECT]
D. Fibrinoid necrosis
Correct Answer: C
NURS 6501 Advanced Pathophysiology Midterm | Page 3
, Rationale: Fat necrosis occurs when lipases released from injured pancreatic cells hydrolyze triglycerides into free fatty acids, which then combine
with calcium to form insoluble calcium soaps (saponification). This process is characteristic of acute pancreatitis and appears as chalky white
deposits on gross examination.
Q11: A 60-year-old patient with chronic hepatitis C infection has a liver biopsy showing hepatocyte injury with accumulation of free
radicals and lipid peroxidation products. Which organelle is primarily responsible for generating the reactive oxygen species
contributing to this injury?
A. Lysosomes
B. Peroxisomes [CORRECT]
C. Endoplasmic reticulum
D. Golgi apparatus
Correct Answer: B
Rationale: Peroxisomes generate hydrogen peroxide and other reactive oxygen species as byproducts of fatty acid oxidation and detoxification
reactions. In chronic liver disease, excessive peroxisomal activity contributes to oxidative stress, lipid peroxidation of cellular membranes, and
progressive hepatocellular injury.
Q12: A 78-year-old patient demonstrates cellular aging changes including shortened telomeres, accumulated lipofuscin pigment, and
decreased DNA repair capacity. Which mechanism best explains the role of telomeres in cellular aging?
A. Telomeres activate oncogene expression with each cell division
B. Telomeres shorten with each cell division, eventually triggering replicative senescence [CORRECT]
C. Telomeres increase in length, causing chromosomal instability
D. Telomeres prevent mitochondrial DNA damage during oxidative stress
Correct Answer: B
Rationale: Telomeres are protective nucleotide sequences at chromosome ends that shorten with each round of cell division. When telomeres reach a
critically short length, they trigger DNA damage responses that lead to replicative senescence or apoptosis, representing a key mechanism of
cellular aging.
Section 2: Membrane Transport and Action Potentials
Q13: A nursing student is reviewing the Na+/K+ ATPase pump. Which statement accurately describes the pump's electrogenic
activity?
A. It moves 3 Na+ ions into the cell and 2 K+ ions out of the cell
B. It moves 3 Na+ ions out of the cell and 2 K+ ions into the cell, creating a net negative intracellular charge
[CORRECT]
C. It moves equal numbers of Na+ and K+ ions in opposite directions, making it electrically neutral
D. It moves 2 Na+ ions out of the cell and 3 K+ ions into the cell, creating a net positive intracellular charge
Correct Answer: B
Rationale: The Na+/K+ ATPase pump is electrogenic because it extrudes 3 Na+ ions for every 2 K+ ions imported, resulting in a net loss of one
positive charge from the intracellular space per cycle. This contributes to the resting membrane potential of approximately -70 to -90 mV.
Q14: A 25-year-old patient requires intravenous glucose supplementation. The nurse knows that glucose is transported across the
intestinal epithelium against its concentration gradient using the energy from Na+ moving down its electrochemical gradient. This
transport mechanism is best described as:
A. Primary active transport
B. Secondary active transport (symport) [CORRECT]
C. Secondary active transport (antiport)
D. Facilitated diffusion
Correct Answer: B
Rationale: The Na+-glucose cotransporter (SGLT) in the intestinal epithelium uses secondary active transport via symport, meaning both Na+ and
glucose move in the same direction across the membrane. The energy comes from the Na+ concentration gradient maintained by the Na+/K+
ATPase pump.
Q15: During a neuroscience lecture, the instructor describes the phase of the action potential in which voltage-gated Na+ channels
rapidly open, allowing Na+ to rush into the cell and causing the membrane potential to become positive. Which phase is being
described?
NURS 6501 Advanced Pathophysiology Midterm | Page 4
