NURS 611 Advanced Pathophysiology - Exam 1 Study Guide (2026/2027) | Maryville University
NURS611 / NURS 611 Exam 1 Study Guide
Advanced Pathophysiology - Questions & Answers ()
Maryville University | Graduate Nursing & Advanced Practice Education
Examination Overview: This comprehensive 100-question study guide is aligned with the Maryville University NURS 611
Advanced Pathophysiology course syllabus, AACN Essentials of Master's Education, and Advanced Pathophysiology
Competencies (2026/2027 Edition). The examination is distributed across eight content domains: Cellular & Molecular
Pathophysiology (15), Genetics & Genetic Disorders (12), Inflammation/Immunity/Infection (15),
Fluid/Electrolyte/Acid-Base (12), Cardiovascular (15), Pulmonary (10), Renal & Genitourinary (10), and Endocrine &
Metabolic (11). Cognitive level distribution: 20% recall, 50% application, 30% analysis. Question style: 75% scenario-based
and 25% direct knowledge. Special inclusions: 15 clinical-reasoning scenarios, 10 laboratory/diagnostic interpretation items,
and 10 mechanism-focused items.
Section 1: Cellular & Molecular Pathophysiology
Q1: A 68-year-old male with long-standing hypertension has an echocardiogram demonstrating concentric
thickening of the left ventricular wall without an increase in the number of cardiac myocytes. This adaptive
cellular response is best classified as which of the following?
A. Atrophy
B. Hypertrophy [CORRECT]
C. Hyperplasia
D. Metaplasia
Correct Answer: B
Rationale: Hypertrophy is an increase in cell size (and organ size) without an increase in cell number, classically exemplified by
cardiac myocytes, which are terminally differentiated and incapable of mitotic division. Increased workload from chronic
hypertension triggers sarcomere duplication and protein synthesis, producing concentric hypertrophy. Atrophy is the opposite
(decrease in cell size), hyperplasia requires cell division (not possible in cardiac myocytes), and metaplasia is reversible
substitution of one adult cell type for another.
Q2: Programmed cell death characterized by chromatin condensation, membrane blebbing, cytoplasmic
shrinking, and the formation of apoptotic bodies that are phagocytosed without eliciting an inflammatory
response describes which cellular process?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Apoptosis [CORRECT]
D. Caseous necrosis
Correct Answer: C
Rationale: Apoptosis is energy-dependent, gene-directed programmed cell death with intact membranes; thus it does not elicit
inflammation. Hallmark morphologic features include cell shrinkage, chromatin condensation (pyknosis), cytoplasmic blebbing,
and apoptotic bodies cleared by phagocytosis. The necrosis variants (coagulative, liquefactive, caseous) all involve membrane
rupture with secondary inflammation and are pathologic, not programmed.
Page 1
,NURS 611 Advanced Pathophysiology - Exam 1 Study Guide (2026/2027) | Maryville University
Q3: A long-term cigarette smoker undergoes bronchial biopsy that demonstrates replacement of the normal
ciliated pseudostratified columnar epithelium by stratified squamous epithelium. The patient is cautioned that
if the exposure continues, this potentially reversible adaptation can serve as the foundation for malignant
transformation. Which adaptive cellular response is described?
A. Dysplasia
B. Anaplasia
C. Metaplasia [CORRECT]
D. Hyperplasia
Correct Answer: C
Rationale: Metaplasia is the reversible substitution of one adult cell type for another in response to chronic irritation; respiratory
epithelium undergoing squamous metaplasia is the classic example in smokers. It is adaptive because squamous epithelium better
withstands injury, but protective mechanisms (cilia, mucus) are lost and a malignant focus may arise from this reprogrammed
epithelium. Dysplasia denotes disordered growth within a cell population (pleomorphism, hyperchromatic nuclei) and is a true
preneoplastic change, while anaplasia is loss of differentiation in established malignancy.
Q4: A biopsy of a myocardial infarction 24 hours after coronary occlusion most characteristically
demonstrates which pattern of cell death, given the gross preservation of tissue architecture despite loss of
nuclei?
A. Liquefactive necrosis
B. Coagulative necrosis [CORRECT]
C. Caseous necrosis
D. Fat necrosis
Correct Answer: B
Rationale: Coagulative necrosis is characteristic of ischemic injury in most solid organs (heart, kidney, liver, spleen) and is
defined by preservation of tissue architecture for days after cell death, with loss of nuclei (pyknosis, karyorrhexis, karyolysis)
and increased cytoplasmic eosinophilia. Liquefactive necrosis occurs in the brain (and in abscesses) where enzymatic digestion
dominates; caseous necrosis is the cheese-like pattern in TB; fat necrosis follows pancreatic enzymatic injury to adipose tissue.
Q5: A 25-year-old female presents with severe intermittent claudication of the right upper extremity. She is a
competitive weightlifter with marked muscle hypertrophy of the upper extremities. The increase in her skeletal
muscle mass is mediated by which cellular mechanism?
A. Stem cell differentiation only
B. Hyperplasia of mature myocytes
C. Hypertrophy plus satellite cell recruitment [CORRECT]
D. Metaplasia of fibroblasts
Correct Answer: C
Rationale: Skeletal muscle responds to resistance training by both hypertrophy of existing myofibers and recruitment of satellite
cells (skeletal muscle stem cells) that fuse into existing fibers, donating nuclei to support a larger synthetic load. Mature
myofibers are post-mitotic and cannot divide, so pure hyperplasia is not the primary mechanism. Fibroblast-to-myocyte
metaplasia does not occur in physiologic adaptation.
Page 2
,NURS 611 Advanced Pathophysiology - Exam 1 Study Guide (2026/2027) | Maryville University
Q6: Reperfusion of ischemic tissue can paradoxically worsen cell injury. The pathophysiologic mechanism
most directly responsible for this reperfusion injury involves generation of which of the following?
A. Reactive oxygen species [CORRECT]
B. Lactic acid
C. Carbon dioxide
D. Cyclic AMP
Correct Answer: A
Rationale: Reperfusion injury is driven by the sudden return of molecular oxygen, which fuels mitochondrial electron transport
chain leakage and xanthine oxidase-generated reactive oxygen species (superoxide, hydrogen peroxide, hydroxyl radical). ROS
oxidize membrane lipids, proteins, and DNA, producing a wave of injury beyond the ischemic core. Lactate accumulation is a
consequence of anaerobic metabolism during ischemia, not a mediator of reperfusion injury. CO2 and cyclic AMP are not
causative mediators of reperfusion injury.
Q7: Which of the following is the most common mechanism by which hypoxia produces irreversible cellular
injury?
A. Direct nuclear DNA fragmentation
B. Reduced aerobic ATP synthesis causing failure of Na+/K+-ATPase [CORRECT]
C. Influx of chloride ions into the cell
D. Activation of intracellular caspases
Correct Answer: B
Rationale: Hypoxia decreases oxidative phosphorylation, lowers ATP, and secondarily impairs the Na+/K+-ATPase pump.
Sodium accumulates intracellularly, water follows osmotically, and cellular and organelle swelling occurs; calcium also enters
the cell, activating phospholipases and proteases that mediate irreversible injury. While caspases and DNA fragmentation may
ultimately occur in apoptosis, the initiating event of ischemic/hypoxic injury is ATP depletion with pump failure.
Q8: A 6-month-old infant with cystic fibrosis is brought to the clinic. Genetic analysis confirms a defect in the
CFTR protein. The primary cellular mechanism disrupted in this patient involves which of the following?
A. Active transport of sodium across the apical membrane
B. ATP-gated chloride channel function [CORRECT]
C. Facilitated diffusion of glucose
D. Receptor-mediated endocytosis
Correct Answer: B
Rationale: The CFTR gene product is a cAMP-regulated chloride channel located on the apical membrane of epithelial cells.
Loss-of-function mutations impair chloride efflux; sodium and water follow abnormally, producing thick, dehydrated secretions
in the airways, pancreas, and sweat glands. Sodium transport is regulated secondarily, but the primary defect is the chloride
channel. Glucose transport and receptor-mediated endocytosis are not affected.
Page 3
, NURS 611 Advanced Pathophysiology - Exam 1 Study Guide (2026/2027) | Maryville University
Q9: A researcher is studying a cell-signaling pathway in which ligand binding to a receptor tyrosine kinase
triggers autophosphorylation, recruitment of Grb2-Sos, Ras activation, and a kinase cascade culminating in
altered gene transcription. This pathway is best described as which of the following?
A. JAK-STAT pathway
B. cAMP-PKA pathway
C. MAPK/ERK pathway [CORRECT]
D. PI3K-Akt pathway
Correct Answer: C
Rationale: Receptor tyrosine kinase (RTK) engagement activates the Ras-Raf-MEK-ERK (MAPK/ERK) cascade, ultimately
modifying transcription of genes governing proliferation, differentiation, and survival. JAK-STAT is activated by cytokine
receptors (not intrinsic kinase activity); cAMP-PKA is downstream of G-protein coupled receptors; PI3K-Akt is a separate
RTK-activated pathway governing survival and metabolism but does not use Ras-Grb2-Sos as its hallmark.
Q10: A 55-year-old male with a femoral fracture has a long leg cast for 8 weeks. After cast removal, the
affected thigh is visibly smaller than the contralateral side. Which cellular mechanism accounts for this
finding?
A. Decrease in cell number
B. Decrease in cell size due to reduced synthetic demand [CORRECT]
C. Sarcomere duplication
D. Fibroblast metaplasia
Correct Answer: B
Rationale: Disuse atrophy is characterized by a decrease in cell size (not number) as protein synthesis falls and proteolysis rises
in response to reduced mechanical demand. Skeletal muscle myofibers shrink but the cell count is preserved; reinnervation and
re-loading can restore size. Sarcomere duplication would cause hypertrophy; fibroblast metaplasia is irrelevant to disuse
atrophy.
Q11: A 60-year-old male undergoes cardiac catheterization for chest pain. During the procedure he has 20
minutes of hypotension. Laboratory studies 6 hours later show a troponin of 0.6 ng/mL (ref <0.04). The earliest
subcellular event in the injured myocytes is best described as:
A. Ribosomal detachment from rough endoplasmic reticulum
B. Mitochondrial transition pore opening and swelling
C. Membrane blebbing and ER swelling [CORRECT]
D. Nuclear chromatin clumping
Correct Answer: C
Rationale: The earliest ultrastructural changes of reversible ischemic injury include plasma membrane blebbing, endoplasmic
reticulum swelling, and dissociation of ribosomes from rough ER. These reflect ATP depletion and Na+/K+ pump failure, but
the cell can still recover if perfusion is restored. Mitochondrial permeability transition pore opening, extensive chromatin
clumping, and membrane rupture are markers of irreversible injury.
Page 4
NURS611 / NURS 611 Exam 1 Study Guide
Advanced Pathophysiology - Questions & Answers ()
Maryville University | Graduate Nursing & Advanced Practice Education
Examination Overview: This comprehensive 100-question study guide is aligned with the Maryville University NURS 611
Advanced Pathophysiology course syllabus, AACN Essentials of Master's Education, and Advanced Pathophysiology
Competencies (2026/2027 Edition). The examination is distributed across eight content domains: Cellular & Molecular
Pathophysiology (15), Genetics & Genetic Disorders (12), Inflammation/Immunity/Infection (15),
Fluid/Electrolyte/Acid-Base (12), Cardiovascular (15), Pulmonary (10), Renal & Genitourinary (10), and Endocrine &
Metabolic (11). Cognitive level distribution: 20% recall, 50% application, 30% analysis. Question style: 75% scenario-based
and 25% direct knowledge. Special inclusions: 15 clinical-reasoning scenarios, 10 laboratory/diagnostic interpretation items,
and 10 mechanism-focused items.
Section 1: Cellular & Molecular Pathophysiology
Q1: A 68-year-old male with long-standing hypertension has an echocardiogram demonstrating concentric
thickening of the left ventricular wall without an increase in the number of cardiac myocytes. This adaptive
cellular response is best classified as which of the following?
A. Atrophy
B. Hypertrophy [CORRECT]
C. Hyperplasia
D. Metaplasia
Correct Answer: B
Rationale: Hypertrophy is an increase in cell size (and organ size) without an increase in cell number, classically exemplified by
cardiac myocytes, which are terminally differentiated and incapable of mitotic division. Increased workload from chronic
hypertension triggers sarcomere duplication and protein synthesis, producing concentric hypertrophy. Atrophy is the opposite
(decrease in cell size), hyperplasia requires cell division (not possible in cardiac myocytes), and metaplasia is reversible
substitution of one adult cell type for another.
Q2: Programmed cell death characterized by chromatin condensation, membrane blebbing, cytoplasmic
shrinking, and the formation of apoptotic bodies that are phagocytosed without eliciting an inflammatory
response describes which cellular process?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Apoptosis [CORRECT]
D. Caseous necrosis
Correct Answer: C
Rationale: Apoptosis is energy-dependent, gene-directed programmed cell death with intact membranes; thus it does not elicit
inflammation. Hallmark morphologic features include cell shrinkage, chromatin condensation (pyknosis), cytoplasmic blebbing,
and apoptotic bodies cleared by phagocytosis. The necrosis variants (coagulative, liquefactive, caseous) all involve membrane
rupture with secondary inflammation and are pathologic, not programmed.
Page 1
,NURS 611 Advanced Pathophysiology - Exam 1 Study Guide (2026/2027) | Maryville University
Q3: A long-term cigarette smoker undergoes bronchial biopsy that demonstrates replacement of the normal
ciliated pseudostratified columnar epithelium by stratified squamous epithelium. The patient is cautioned that
if the exposure continues, this potentially reversible adaptation can serve as the foundation for malignant
transformation. Which adaptive cellular response is described?
A. Dysplasia
B. Anaplasia
C. Metaplasia [CORRECT]
D. Hyperplasia
Correct Answer: C
Rationale: Metaplasia is the reversible substitution of one adult cell type for another in response to chronic irritation; respiratory
epithelium undergoing squamous metaplasia is the classic example in smokers. It is adaptive because squamous epithelium better
withstands injury, but protective mechanisms (cilia, mucus) are lost and a malignant focus may arise from this reprogrammed
epithelium. Dysplasia denotes disordered growth within a cell population (pleomorphism, hyperchromatic nuclei) and is a true
preneoplastic change, while anaplasia is loss of differentiation in established malignancy.
Q4: A biopsy of a myocardial infarction 24 hours after coronary occlusion most characteristically
demonstrates which pattern of cell death, given the gross preservation of tissue architecture despite loss of
nuclei?
A. Liquefactive necrosis
B. Coagulative necrosis [CORRECT]
C. Caseous necrosis
D. Fat necrosis
Correct Answer: B
Rationale: Coagulative necrosis is characteristic of ischemic injury in most solid organs (heart, kidney, liver, spleen) and is
defined by preservation of tissue architecture for days after cell death, with loss of nuclei (pyknosis, karyorrhexis, karyolysis)
and increased cytoplasmic eosinophilia. Liquefactive necrosis occurs in the brain (and in abscesses) where enzymatic digestion
dominates; caseous necrosis is the cheese-like pattern in TB; fat necrosis follows pancreatic enzymatic injury to adipose tissue.
Q5: A 25-year-old female presents with severe intermittent claudication of the right upper extremity. She is a
competitive weightlifter with marked muscle hypertrophy of the upper extremities. The increase in her skeletal
muscle mass is mediated by which cellular mechanism?
A. Stem cell differentiation only
B. Hyperplasia of mature myocytes
C. Hypertrophy plus satellite cell recruitment [CORRECT]
D. Metaplasia of fibroblasts
Correct Answer: C
Rationale: Skeletal muscle responds to resistance training by both hypertrophy of existing myofibers and recruitment of satellite
cells (skeletal muscle stem cells) that fuse into existing fibers, donating nuclei to support a larger synthetic load. Mature
myofibers are post-mitotic and cannot divide, so pure hyperplasia is not the primary mechanism. Fibroblast-to-myocyte
metaplasia does not occur in physiologic adaptation.
Page 2
,NURS 611 Advanced Pathophysiology - Exam 1 Study Guide (2026/2027) | Maryville University
Q6: Reperfusion of ischemic tissue can paradoxically worsen cell injury. The pathophysiologic mechanism
most directly responsible for this reperfusion injury involves generation of which of the following?
A. Reactive oxygen species [CORRECT]
B. Lactic acid
C. Carbon dioxide
D. Cyclic AMP
Correct Answer: A
Rationale: Reperfusion injury is driven by the sudden return of molecular oxygen, which fuels mitochondrial electron transport
chain leakage and xanthine oxidase-generated reactive oxygen species (superoxide, hydrogen peroxide, hydroxyl radical). ROS
oxidize membrane lipids, proteins, and DNA, producing a wave of injury beyond the ischemic core. Lactate accumulation is a
consequence of anaerobic metabolism during ischemia, not a mediator of reperfusion injury. CO2 and cyclic AMP are not
causative mediators of reperfusion injury.
Q7: Which of the following is the most common mechanism by which hypoxia produces irreversible cellular
injury?
A. Direct nuclear DNA fragmentation
B. Reduced aerobic ATP synthesis causing failure of Na+/K+-ATPase [CORRECT]
C. Influx of chloride ions into the cell
D. Activation of intracellular caspases
Correct Answer: B
Rationale: Hypoxia decreases oxidative phosphorylation, lowers ATP, and secondarily impairs the Na+/K+-ATPase pump.
Sodium accumulates intracellularly, water follows osmotically, and cellular and organelle swelling occurs; calcium also enters
the cell, activating phospholipases and proteases that mediate irreversible injury. While caspases and DNA fragmentation may
ultimately occur in apoptosis, the initiating event of ischemic/hypoxic injury is ATP depletion with pump failure.
Q8: A 6-month-old infant with cystic fibrosis is brought to the clinic. Genetic analysis confirms a defect in the
CFTR protein. The primary cellular mechanism disrupted in this patient involves which of the following?
A. Active transport of sodium across the apical membrane
B. ATP-gated chloride channel function [CORRECT]
C. Facilitated diffusion of glucose
D. Receptor-mediated endocytosis
Correct Answer: B
Rationale: The CFTR gene product is a cAMP-regulated chloride channel located on the apical membrane of epithelial cells.
Loss-of-function mutations impair chloride efflux; sodium and water follow abnormally, producing thick, dehydrated secretions
in the airways, pancreas, and sweat glands. Sodium transport is regulated secondarily, but the primary defect is the chloride
channel. Glucose transport and receptor-mediated endocytosis are not affected.
Page 3
, NURS 611 Advanced Pathophysiology - Exam 1 Study Guide (2026/2027) | Maryville University
Q9: A researcher is studying a cell-signaling pathway in which ligand binding to a receptor tyrosine kinase
triggers autophosphorylation, recruitment of Grb2-Sos, Ras activation, and a kinase cascade culminating in
altered gene transcription. This pathway is best described as which of the following?
A. JAK-STAT pathway
B. cAMP-PKA pathway
C. MAPK/ERK pathway [CORRECT]
D. PI3K-Akt pathway
Correct Answer: C
Rationale: Receptor tyrosine kinase (RTK) engagement activates the Ras-Raf-MEK-ERK (MAPK/ERK) cascade, ultimately
modifying transcription of genes governing proliferation, differentiation, and survival. JAK-STAT is activated by cytokine
receptors (not intrinsic kinase activity); cAMP-PKA is downstream of G-protein coupled receptors; PI3K-Akt is a separate
RTK-activated pathway governing survival and metabolism but does not use Ras-Grb2-Sos as its hallmark.
Q10: A 55-year-old male with a femoral fracture has a long leg cast for 8 weeks. After cast removal, the
affected thigh is visibly smaller than the contralateral side. Which cellular mechanism accounts for this
finding?
A. Decrease in cell number
B. Decrease in cell size due to reduced synthetic demand [CORRECT]
C. Sarcomere duplication
D. Fibroblast metaplasia
Correct Answer: B
Rationale: Disuse atrophy is characterized by a decrease in cell size (not number) as protein synthesis falls and proteolysis rises
in response to reduced mechanical demand. Skeletal muscle myofibers shrink but the cell count is preserved; reinnervation and
re-loading can restore size. Sarcomere duplication would cause hypertrophy; fibroblast metaplasia is irrelevant to disuse
atrophy.
Q11: A 60-year-old male undergoes cardiac catheterization for chest pain. During the procedure he has 20
minutes of hypotension. Laboratory studies 6 hours later show a troponin of 0.6 ng/mL (ref <0.04). The earliest
subcellular event in the injured myocytes is best described as:
A. Ribosomal detachment from rough endoplasmic reticulum
B. Mitochondrial transition pore opening and swelling
C. Membrane blebbing and ER swelling [CORRECT]
D. Nuclear chromatin clumping
Correct Answer: C
Rationale: The earliest ultrastructural changes of reversible ischemic injury include plasma membrane blebbing, endoplasmic
reticulum swelling, and dissociation of ribosomes from rough ER. These reflect ATP depletion and Na+/K+ pump failure, but
the cell can still recover if perfusion is restored. Mitochondrial permeability transition pore opening, extensive chromatin
clumping, and membrane rupture are markers of irreversible injury.
Page 4
