NURS 5461 / NURS5461 - QUIZ 1 2026 2026/2027-
EDITION REAL EXAM 94- QUESTIONS AND 100%
VERIFIED ANSWERS
Questions with with step by step and answer |100% Verified | A+ Graded Review
Course Overview
NURS 5461: Advanced Pathophysiology & Adult-Gerontology Management Across the
Lifespan - Quiz 1 covers foundational concepts essential for advanced practice nursing. This
quiz integrates principles of cellular injury, genetic alterations, immune dysfunction,
hematologic disorders, infectious disease, and major body systems pathophysiology
(pulmonary, cardiovascular, renal, endocrine, neurologic, and musculoskeletal).
Focus Areas for Quiz 1: Mechanisms of disease at molecular/cellular level, compensatory
responses, clinical manifestations, and implications for diagnosis and management in adult
and older adult populations. Questions emphasize critical thinking, differential diagnosis
reasoning, and application of pathophysiology to clinical decision-making as required for
Adult-Gerontology Primary Care Nurse Practitioner practice.
Format: 94 multiple-choice questions organized by module. Each question has 4 options (A-
D) with ONE correct answer highlighted in GREEN. Under each answer set, a rationale
explains why the correct answer is correct and why others are not. All questions end with a
question mark (?) for clarity.
Module 1: Foundations of Advanced Pathophysiology & Cellular Responses
1. What is the primary mechanism of cellular injury in hypoxia?
A. Decreased ATP production leading to failure of Na+/K+ pump?
B. Increased protein synthesis?
C. Enhanced mitochondrial DNA replication?
D. Increased intracellular pH?
Rationale: Hypoxia decreases oxidative phosphorylation → ATP → failure of Na+/K+ ATPase → Na+ and
water influx, cell swelling. Other options increase or are unrelated to hypoxic injury.
2. Which type of cellular adaptation is characterized by an increase in cell size?
A. Hyperplasia?
B. Atrophy?
C. Hypertrophy?
D. Metaplasia?
Rationale: Hypertrophy = increase in cell size (e.g., cardiac muscle in hypertension). Hyperplasia =
increase in cell number. Atrophy = decrease in size/number. Metaplasia = one mature cell type replaced by
another.
3. During reperfusion injury, what is the major source of cellular damage?
A. Reactive oxygen species and calcium overload?
, B. Increased oxygen delivery?
C. Decreased inflammatory mediators?
D. Activation of anaerobic metabolism?
Rationale: Reperfusion brings O2 that generates ROS via xanthine oxidase and mitochondrial leak, plus
calcium overload and inflammation, worsening injury.
4. Which lab marker best indicates irreversible cell injury?
A. Reversible cell swelling?
B. Release of intracellular enzymes like LDH and troponin into blood?
C. Increased glycogen storage?
D. Mild membrane blebbing?
Rationale: Irreversible injury = membrane disruption → enzymes (LDH, CK, troponin) leak. Reversible
changes are swelling, blebbing without membrane loss.
5. What differentiates apoptosis from necrosis?
A. Apoptosis is always pathologic while necrosis is physiologic?
B. Apoptosis involves cell shrinkage, chromatin condensation, and is non-inflammatory?
C. Necrosis involves caspase activation without inflammation?
D. Apoptosis causes membrane rupture and inflammation?
Rationale: Apoptosis is programmed, ATP-dependent, caspase-mediated, cell shrinks, forms apoptotic
bodies, no inflammation. Necrosis is uncontrolled, membrane rupture, inflammation.
6. Free radical injury is mitigated by which endogenous antioxidant system?
A. Superoxide dismutase, catalase, and glutathione?
B. Collagenase and elastase?
C. Thromboxane and prostacyclin?
D. Histamine and serotonin?
Rationale: SOD converts superoxide to H2O2, catalase and glutathione peroxidase detoxify H2O2. Others
are inflammatory or structural mediators.
7. In chronic inflammation, which cell is the predominant player?
A. Neutrophil?
B. Macrophage?
C. Eosinophil?
D. Basophil?
Rationale: Acute = neutrophils. Chronic = macrophages, lymphocytes, plasma cells. Macrophages
orchestrate chronic inflammation and granuloma formation.
8. What is the hallmark of dysplasia?
A. Disordered growth with loss of uniformity and architectural orientation?
B. Increase in size of normal cells?
C. Normal adaptive replacement of cells?
, D. Decrease in cell number?
Rationale: Dysplasia = abnormal growth, pleomorphism, loss of polarity, often precancerous (e.g., cervical
dysplasia). Not simply hypertrophy or atrophy.
9. Which factor shifts the oxygen-hemoglobin dissociation curve to the right?
A. Increased pH and decreased CO2?
B. Decreased 2,3-BPG, decreased temperature?
C. Increased CO2, increased temperature, increased 2,3-BPG, and acidosis?
D. Decreased H+ concentration?
Rationale: Right shift = decreased affinity → increased O2 unloading to tissues. Caused by H+, CO2,
temp, 2,3-BPG (Bohr effect).
10. What is the primary intracellular buffer system?
A. Bicarbonate-carbonic acid system?
B. Hemoglobin and intracellular proteins?
C. Phosphate buffer system only?
D. Renal ammonia system?
Rationale: Intracellular buffering is mainly proteins and phosphates, plus hemoglobin in RBCs. Bicarbonate
is primary extracellular buffer.
11. Which electrolyte abnormality causes peaked T waves on ECG?
A. Hypokalemia?
B. Hyperkalemia?
C. Hypocalcemia?
D. Hyponatremia?
Rationale: Hyperkalemia → tall peaked T waves, widened QRS, sine wave. Hypokalemia → flattened T, U
waves.
12. What is the mechanism of edema in hypoalbuminemia?
A. Increased capillary hydrostatic pressure?
B. Decreased plasma oncotic pressure leading to fluid shift to interstitium?
C. Lymphatic obstruction?
D. Increased vascular permeability?
Rationale: Albumin maintains oncotic pressure. Low albumin → oncotic pressure → fluid leaves
vasculature → edema.
13. Which statement best describes primary hemostasis?
A. Formation of fibrin clot via coagulation cascade?
B. Platelet adhesion, activation, and aggregation to form platelet plug?
C. Clot retraction and fibrinolysis?
D. Vitamin K dependent factor synthesis?
Rationale: Primary hemostasis = platelet plug. Secondary hemostasis = coagulation cascade forming fibrin.
EDITION REAL EXAM 94- QUESTIONS AND 100%
VERIFIED ANSWERS
Questions with with step by step and answer |100% Verified | A+ Graded Review
Course Overview
NURS 5461: Advanced Pathophysiology & Adult-Gerontology Management Across the
Lifespan - Quiz 1 covers foundational concepts essential for advanced practice nursing. This
quiz integrates principles of cellular injury, genetic alterations, immune dysfunction,
hematologic disorders, infectious disease, and major body systems pathophysiology
(pulmonary, cardiovascular, renal, endocrine, neurologic, and musculoskeletal).
Focus Areas for Quiz 1: Mechanisms of disease at molecular/cellular level, compensatory
responses, clinical manifestations, and implications for diagnosis and management in adult
and older adult populations. Questions emphasize critical thinking, differential diagnosis
reasoning, and application of pathophysiology to clinical decision-making as required for
Adult-Gerontology Primary Care Nurse Practitioner practice.
Format: 94 multiple-choice questions organized by module. Each question has 4 options (A-
D) with ONE correct answer highlighted in GREEN. Under each answer set, a rationale
explains why the correct answer is correct and why others are not. All questions end with a
question mark (?) for clarity.
Module 1: Foundations of Advanced Pathophysiology & Cellular Responses
1. What is the primary mechanism of cellular injury in hypoxia?
A. Decreased ATP production leading to failure of Na+/K+ pump?
B. Increased protein synthesis?
C. Enhanced mitochondrial DNA replication?
D. Increased intracellular pH?
Rationale: Hypoxia decreases oxidative phosphorylation → ATP → failure of Na+/K+ ATPase → Na+ and
water influx, cell swelling. Other options increase or are unrelated to hypoxic injury.
2. Which type of cellular adaptation is characterized by an increase in cell size?
A. Hyperplasia?
B. Atrophy?
C. Hypertrophy?
D. Metaplasia?
Rationale: Hypertrophy = increase in cell size (e.g., cardiac muscle in hypertension). Hyperplasia =
increase in cell number. Atrophy = decrease in size/number. Metaplasia = one mature cell type replaced by
another.
3. During reperfusion injury, what is the major source of cellular damage?
A. Reactive oxygen species and calcium overload?
, B. Increased oxygen delivery?
C. Decreased inflammatory mediators?
D. Activation of anaerobic metabolism?
Rationale: Reperfusion brings O2 that generates ROS via xanthine oxidase and mitochondrial leak, plus
calcium overload and inflammation, worsening injury.
4. Which lab marker best indicates irreversible cell injury?
A. Reversible cell swelling?
B. Release of intracellular enzymes like LDH and troponin into blood?
C. Increased glycogen storage?
D. Mild membrane blebbing?
Rationale: Irreversible injury = membrane disruption → enzymes (LDH, CK, troponin) leak. Reversible
changes are swelling, blebbing without membrane loss.
5. What differentiates apoptosis from necrosis?
A. Apoptosis is always pathologic while necrosis is physiologic?
B. Apoptosis involves cell shrinkage, chromatin condensation, and is non-inflammatory?
C. Necrosis involves caspase activation without inflammation?
D. Apoptosis causes membrane rupture and inflammation?
Rationale: Apoptosis is programmed, ATP-dependent, caspase-mediated, cell shrinks, forms apoptotic
bodies, no inflammation. Necrosis is uncontrolled, membrane rupture, inflammation.
6. Free radical injury is mitigated by which endogenous antioxidant system?
A. Superoxide dismutase, catalase, and glutathione?
B. Collagenase and elastase?
C. Thromboxane and prostacyclin?
D. Histamine and serotonin?
Rationale: SOD converts superoxide to H2O2, catalase and glutathione peroxidase detoxify H2O2. Others
are inflammatory or structural mediators.
7. In chronic inflammation, which cell is the predominant player?
A. Neutrophil?
B. Macrophage?
C. Eosinophil?
D. Basophil?
Rationale: Acute = neutrophils. Chronic = macrophages, lymphocytes, plasma cells. Macrophages
orchestrate chronic inflammation and granuloma formation.
8. What is the hallmark of dysplasia?
A. Disordered growth with loss of uniformity and architectural orientation?
B. Increase in size of normal cells?
C. Normal adaptive replacement of cells?
, D. Decrease in cell number?
Rationale: Dysplasia = abnormal growth, pleomorphism, loss of polarity, often precancerous (e.g., cervical
dysplasia). Not simply hypertrophy or atrophy.
9. Which factor shifts the oxygen-hemoglobin dissociation curve to the right?
A. Increased pH and decreased CO2?
B. Decreased 2,3-BPG, decreased temperature?
C. Increased CO2, increased temperature, increased 2,3-BPG, and acidosis?
D. Decreased H+ concentration?
Rationale: Right shift = decreased affinity → increased O2 unloading to tissues. Caused by H+, CO2,
temp, 2,3-BPG (Bohr effect).
10. What is the primary intracellular buffer system?
A. Bicarbonate-carbonic acid system?
B. Hemoglobin and intracellular proteins?
C. Phosphate buffer system only?
D. Renal ammonia system?
Rationale: Intracellular buffering is mainly proteins and phosphates, plus hemoglobin in RBCs. Bicarbonate
is primary extracellular buffer.
11. Which electrolyte abnormality causes peaked T waves on ECG?
A. Hypokalemia?
B. Hyperkalemia?
C. Hypocalcemia?
D. Hyponatremia?
Rationale: Hyperkalemia → tall peaked T waves, widened QRS, sine wave. Hypokalemia → flattened T, U
waves.
12. What is the mechanism of edema in hypoalbuminemia?
A. Increased capillary hydrostatic pressure?
B. Decreased plasma oncotic pressure leading to fluid shift to interstitium?
C. Lymphatic obstruction?
D. Increased vascular permeability?
Rationale: Albumin maintains oncotic pressure. Low albumin → oncotic pressure → fluid leaves
vasculature → edema.
13. Which statement best describes primary hemostasis?
A. Formation of fibrin clot via coagulation cascade?
B. Platelet adhesion, activation, and aggregation to form platelet plug?
C. Clot retraction and fibrinolysis?
D. Vitamin K dependent factor synthesis?
Rationale: Primary hemostasis = platelet plug. Secondary hemostasis = coagulation cascade forming fibrin.
