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🕒 PATHOPHYSIOLOGY MOCK FINAL —
TIMED VERSION
Total Questions: 50 Time Limit: 90 minutes Recommended Pace: ~1.8 minutes per question Format: Multiple choice (one best answer) Resources: 🕒 No notes, 🕒 no book, 🕒 no internet Calculator: Allowed (basic)
🕒 EXAM INSTRUCTIONS (READ FIRST)
- Set a timer for 90 minutes
- Work in a quiet space
- Answer each question once — do not look ahead
- Do NOT review rationales until the end
- Mark questions you’re unsure of and move on
- Aim for ≥ 40/50 (80%)
🕒 EXAM QUESTIONS
(Answer on paper or in a notes app as: 1–C, 2–B, etc.)
Questions 1–10: Cellular Injury & Fluid Balance
- Which change indicates reversible cellular injury? A. Nuclear fragmentation NR-283 Complete Pathophysiology Mock Final TIMED EXAM SIMULATION 100% verified Questions & Well Revised Rationales Update 2026
NR-283 Complete Pathophysiology Mock Final
TIMED EXAM SIMULATION 100% verified
Questions & Well Revised Rationales Update 2026
B. Cell membrane rupture C. Cellular swelling D. Apoptosis
- Irreversible cell injury is most closely associated with: A. Mild hypoxia B. Mitochondrial dysfunction and membrane damage C. Fatty change D. Cellular adaptation
- Free radicals damage cells primarily by: A. Increasing ATP synthesis B. Causing lipid peroxidation and DNA damage C. Enhancing enzyme activity D. Reducing inflammation
- Which mediator plays a central role in systemic inflammation and sepsis? A. Histamine B. TNF-α C. Albumin D. Platelets
- Chronic inflammation increases cancer risk because it causes: A. Decreased immunity B. Persistent cell turnover and DNA damage C. Reduced angiogenesis D. Excess apoptosis
- Kussmaul respirations indicate compensation for: A. Respiratory alkalosis B. Metabolic acidosis C. Metabolic alkalosis D. Respiratory acidosis
- Excessive vomiting most commonly causes: A. Metabolic acidosis B. Respiratory acidosis C. Metabolic alkalosis D. Respiratory alkalosis
- Hyperkalemia is most dangerous because it can cause: A. Hypertension B. Dysrhythmias and muscle weakness C. Tetany D. Polyuria
- Third spacing refers to fluid that: A. Remains intravascular B. Moves intracellularly C. Accumulates in interstitial or body cavities D. Is excreted
- Which hormone increases sodium and water retention? A. ADH B. Aldosterone
C. Insulin D. Cortisol
Questions 11–20: Cardiovascular & Respiratory
- Atherosclerosis begins with: A. Valve calcification B. Endothelial injury and lipid accumulation C. Acute inflammation only D. Ventricular hypertrophy
- The earliest effect of myocardial ischemia is: A. Necrosis B. Loss of contractility C. Scar formation D. Ventricular rupture
- Hypertension causes left ventricular hypertrophy due to increased: A. Preload B. Afterload C. Contractility D. Heart rate
- Right-sided heart failure most commonly causes: A. Pulmonary edema B. Peripheral edema and JVD C. Crackles D. Decreased venous pressure
- Septic shock differs from cardiogenic shock because it involves: A. Decreased cardiac output only B. Systemic vasodilation C. Fluid loss D. Valve dysfunction
- Hypoxemia is defined as: A. Low oxygen delivery B. Low oxygen in arterial blood C. Reduced hemoglobin D. Increased CO₂
- COPD causes airflow limitation due to: A. Fibrosis B. Air trapping and alveolar destruction C. Pulmonary edema D. Bronchial collapse
- Pulmonary embolism causes hypoxemia due to: A. Shunting B. Diffusion impairment
NR-283 Complete Pathophysiology Mock Final TIMED EXAM SIMULATION 100% verified Questions & Well Revised Rationales Update 2026
NR-283 Complete Pathophysiology Mock Final TIMED EXAM SIMULATION 100% verified Questions & Well Revised Rationales Update 2026
C. Increased urine output D. Chronic inflammation
- CKD causes anemia due to decreased: A. Iron B. Erythropoietin C. Platelets D. Hemoglobin breakdown
- Nephrotic syndrome is characterized by: A. Hematuria B. Massive proteinuria and edema C. Dehydration D. Low cholesterol
- Portal hypertension occurs because of: A. Increased blood volume B. Resistance to portal blood flow C. Splenic rupture D. Reduced albumin only
- Ascites develops primarily due to: A. Increased oncotic pressure B. Portal hypertension and hypoalbuminemia C. Dehydration D. Sodium loss
Questions 31–50: Neuro, Immune & Rapid Review
- Ischemic stroke occurs due to: A. Vessel rupture B. Thrombotic or embolic occlusion C. Increased ICP D. Vasospasm
- Parkinson disease results from loss of: A. Acetylcholine B. Dopamine C. Serotonin D. GABA
- Multiple sclerosis is best described as: A. Degenerative disorder B. Autoimmune demyelinating disease C. Infectious disease D. Vascular disorder
- Type I hypersensitivity is mediated by: A. IgG B. IgM
C. IgE D. T cells
- Septic shock develops due to: A. Vasoconstriction B. Uncontrolled inflammatory response C. Cardiac hypertrophy D. Fluid overload
- Primary buffer system → A. Phosphate B. Protein C. Bicarbonate–carbonic acid D. Hemoglobin
- Main cause of edema → A. Increased oncotic pressure B. Decreased hydrostatic pressure C. Increased capillary permeability D. Dehydration
- Cause of respiratory alkalosis → A. Hypoventilation B. Hyperventilation C. Renal failure D. Diarrhea
- Hallmark of chronic inflammation → A. Neutrophils B. Macrophages C. Eosinophils D. Platelets
- Major cause of metabolic acidosis → A. Excess acid or bicarbonate loss B. Vomiting C. Hyperventilation D. Aldosterone excess
- Shock complication → A. Hypertension B. Multiple organ dysfunction C. Bradycardia D. Edema only
- Primary regulator of blood pressure → A. Heart B. Lungs C. Kidneys D. Liver
- Hormone affecting water reabsorption → A. Insulin B. Cortisol
NR-283 Complete Pathophysiology Mock Final TIMED EXAM SIMULATION 100% verified Questions & Well Revised Rationales Update 2026
NR-283 Complete Pathophysiology Mock Final TIMED EXAM SIMULATION 100% verified Questions & Well Revised Rationales Update 2026
🕒 Answer: C. Cellular swelling Rationale: Cellular swelling results from failure of the sodium-potassium pump and is an early, reversible sign of injury. Nuclear fragmentation and membrane rupture indicate irreversible injury.
2. Irreversible cell injury is most closely associated with:
🕒 Answer: B. Mitochondrial dysfunction and membrane damage Rationale: Irreversible injury involves loss of mitochondrial ATP production and membrane integrity, leading to cell death.
3. Free radicals damage cells primarily by:
🕒 Answer: B. Causing lipid peroxidation and DNA damage Rationale: Free radicals destabilize cell membranes and damage DNA, contributing to aging and disease.
4. Which mediator plays a central role in systemic inflammation and sepsis?
🕒 Answer: B. TNF-α Rationale: TNF-α is a major proinflammatory cytokine responsible for fever, hypotension, and capillary leak in sepsis.
5. Chronic inflammation increases cancer risk because it causes:
🕒 Answer: B. Persistent cell turnover and DNA damage Rationale: Continuous inflammation promotes mutations and uncontrolled cell growth.
6. Kussmaul respirations indicate compensation for:
🕒 Answer: B. Metabolic acidosis Rationale: Deep, rapid breathing eliminates CO₂ to compensate for acid buildup (e.g., DKA). NR-283 Complete Pathophysiology Mock Final TIMED EXAM SIMULATION 100% verified Questions & Well Revised Rationales Update 2026
13. Hypertension causes left ventricular hypertrophy due to increased:
🕒 Answer: B. Afterload Rationale: The heart must pump against higher resistance.
14. Right-sided heart failure most commonly causes:
🕒 Answer: B. Peripheral edema and JVD Rationale: Blood backs up into systemic circulation.
15. Septic shock differs from cardiogenic shock because it involves:
🕒 Answer: B. Systemic vasodilation Rationale: Cytokines cause widespread vasodilation and hypotension.
16. Hypoxemia is defined as:
🕒 Answer: B. Low oxygen in arterial blood Rationale: Measured by PaO₂ or oxygen saturation.
17. COPD causes airflow limitation due to:
🕒 Answer: B. Air trapping and alveolar destruction Rationale: Loss of elastic recoil impairs exhalation.
18. Pulmonary embolism causes hypoxemia due to:
🕒 Answer: C. Ventilation–perfusion mismatch Rationale: Perfusion is blocked despite ventilation.
19. ARDS causes respiratory failure primarily because of:
NR-283 Complete Pathophysiology Mock Final TIMED EXAM SIMULATION 100% verified Questions & Well Revised Rationales Update 2026
🕒 Answer: B. Increased alveolar-capillary permeability Rationale: Fluid leaks into alveoli, impairing gas exchange.
20. Respiratory acidosis is caused by:
🕒 Answer: B. Hypoventilation Rationale: CO₂ retention increases acidity. Endocrine, Renal & GI
21. Type 1 diabetes mellitus results from:
🕒 Answer: B. Autoimmune destruction of beta cells
22. Insulin resistance causes hyperglycemia by:
🕒 Answer: B. Reducing cellular glucose uptake
23. Diabetic ketoacidosis is characterized by:
🕒 Answer: B. Ketone production and metabolic acidosis
24. Cushing syndrome is caused by excess:
🕒 Answer: B. Cortisol
25. Addison disease results from deficiency of:
🕒 Answer: B. Cortisol and aldosterone
26. Acute kidney injury is best defined as:
🕒 Answer: B. Sudden decline in renal function
27. CKD causes anemia due to decreased:
🕒 Answer: B. Erythropoietin
28. Nephrotic syndrome is characterized by:
NR-283 Complete Pathophysiology Mock Final TIMED EXAM SIMULATION 100% verified Questions & Well Revised Rationales Update 2026
🕒 Answer: B. Hyperventilation
39. Hallmark of chronic inflammation:
🕒 Answer: B. Macrophages
40. Major cause of metabolic acidosis:
🕒 Answer: A. Excess acid or bicarbonate loss
41. Shock complication:
🕒 Answer: B. Multiple organ dysfunction
42. Primary regulator of blood pressure:
🕒 Answer: C. Kidneys
43. Hormone affecting water reabsorption:
🕒 Answer: C. ADH
44. Cause of hypoxemia in ARDS:
🕒 Answer: B. Alveolar flooding
45. Hallmark of CKD:
🕒 Answer: B. Progressive nephron loss
46. Main cause of anemia symptoms:
🕒 Answer: B. Reduced oxygen delivery
47. Mechanism of fever:
🕒 Answer: B. Hypothalamic set-point reset
48. COPD gas exchange issue:
🕒 Answer: B. Air trapping
49. Autoimmune disease feature:
NR-283 Complete Pathophysiology Mock Final TIMED EXAM SIMULATION 100% verified Questions & Well Revised Rationales Update 2026
🕒 Answer: B. Self-tissue attack
50. Primary purpose of inflammation:
🕒 Answer: B. Remove injury and initiate repair NR-283 Complete Pathophysiology Mock Final TIMED EXAM SIMULATION 100% verified Questions & Well Revised
