SCI225 Pathophysiology Final Exam 2026/2027 UPDAT… 2026/2027 • Verified • Assured Grade A+
✓ VERIFIED • 2026/2027 UPDATE • 100% ACCURATE
SCI225 Pathophysiology Final Exam 2026/2027 UPDATE
|Nightingale
ACTUAL EXAM QUESTIONS & VERIFIED ANSWERS
with Clear, Detailed Rationales
Document Type: Exam (Elaborations) / Study Guide
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Rationales
Grade: A+ Assured
ASSURED GRADE A+
Exam (Elaborations) • Detailed Rationales Page 1
,SCI225 Pathophysiology Final Exam 2026/2027 UPDAT… 2026/2027 • Verified • Assured Grade A+
Questions & Verified Answers
1. Which cellular adaptation is characterized by the replacement of one mature cell type by
another, often as a response to chronic irritation or inflammation?
A. Hypertrophy
B. Atrophy
C. Dysplasia
D. Metaplasia
Answer: D
Rationale: Metaplasia is the reversible replacement of one mature cell type by another, less
differentiated cell type, typically to better withstand an adverse environment. Clear understanding of
this concept improves both test performance and everyday clinical judgment. Practice applying it to
short case scenarios to lock the idea in place. This knowledge supports safe care and helps the nurse
teach the client and family clearly and simply. Clear teaching improves cooperation and reduces
anxiety.
2. A patient’s arterial blood gas results show a pH of 7.25, a PaCO2 of 55 mmHg, and a HCO3
of 26 mEq/L. Which acid-base imbalance is present?
A. Metabolic Alkalosis
B. Metabolic Acidosis
C. Respiratory Acidosis
D. Respiratory Alkalosis
Answer: C
Rationale: The low pH indicates acidosis, and the elevated PaCO2 indicates a respiratory cause, as
the bicarbonate is within the normal range. Exam questions often test whether you can pick the most
practical and safe choice for the client in real situations. Focus on what the nurse can actually do right
now. This is important because the nurse must choose the action that keeps the client safest while still
meeting their basic needs. Always think about safety first when answering these questions.
Exam (Elaborations) • Detailed Rationales Page 2
, SCI225 Pathophysiology Final Exam 2026/2027 UPDAT… 2026/2027 • Verified • Assured Grade A+
3. In the compensatory stage of hypovolemic shock, what is the primary physiological
response to maintain cardiac output?
A. Vasodilation of peripheral vessels
B. Decreased release of Antidiuretic Hormone
C. Activation of the sympathetic nervous system
D. Decreased Renin-Angiotensin-Aldosterone activity
Answer: C
Rationale: The sympathetic nervous system triggers tachycardia and vasoconstriction to maintain
blood pressure and perfusion to vital organs. Exam questions often test whether you can pick the most
practical and safe choice for the client in real situations. Focus on what the nurse can actually do right
now. Remembering this point will help you decide the best nursing action when similar questions
appear on the exam. Link the answer to the client’s current condition and risk level.
4. Which pathophysiological mechanism is central to the development of Multiple Sclerosis?
A. Depletion of dopamine in the substantia nigra
B. Immune-mediated demyelination of the central nervous system
C. Excessive production of beta-amyloid plaques
D. Destruction of acetylcholine receptors at the neuromuscular junction
Answer: B
Rationale: Multiple Sclerosis is an autoimmune disorder where the immune system attacks the myelin
sheath of nerve fibers in the brain and spinal cord. Knowing the reason behind the correct answer
makes it easier to rule out the wrong options quickly. Look for the choice that protects the client and
matches the priority need. Knowing the reason behind the correct answer makes it easier to rule out
the wrong options quickly. Look for the choice that protects the client and matches the priority need.
Exam (Elaborations) • Detailed Rationales Page 3
✓ VERIFIED • 2026/2027 UPDATE • 100% ACCURATE
SCI225 Pathophysiology Final Exam 2026/2027 UPDATE
|Nightingale
ACTUAL EXAM QUESTIONS & VERIFIED ANSWERS
with Clear, Detailed Rationales
Document Type: Exam (Elaborations) / Study Guide
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Rationales
Grade: A+ Assured
ASSURED GRADE A+
Exam (Elaborations) • Detailed Rationales Page 1
,SCI225 Pathophysiology Final Exam 2026/2027 UPDAT… 2026/2027 • Verified • Assured Grade A+
Questions & Verified Answers
1. Which cellular adaptation is characterized by the replacement of one mature cell type by
another, often as a response to chronic irritation or inflammation?
A. Hypertrophy
B. Atrophy
C. Dysplasia
D. Metaplasia
Answer: D
Rationale: Metaplasia is the reversible replacement of one mature cell type by another, less
differentiated cell type, typically to better withstand an adverse environment. Clear understanding of
this concept improves both test performance and everyday clinical judgment. Practice applying it to
short case scenarios to lock the idea in place. This knowledge supports safe care and helps the nurse
teach the client and family clearly and simply. Clear teaching improves cooperation and reduces
anxiety.
2. A patient’s arterial blood gas results show a pH of 7.25, a PaCO2 of 55 mmHg, and a HCO3
of 26 mEq/L. Which acid-base imbalance is present?
A. Metabolic Alkalosis
B. Metabolic Acidosis
C. Respiratory Acidosis
D. Respiratory Alkalosis
Answer: C
Rationale: The low pH indicates acidosis, and the elevated PaCO2 indicates a respiratory cause, as
the bicarbonate is within the normal range. Exam questions often test whether you can pick the most
practical and safe choice for the client in real situations. Focus on what the nurse can actually do right
now. This is important because the nurse must choose the action that keeps the client safest while still
meeting their basic needs. Always think about safety first when answering these questions.
Exam (Elaborations) • Detailed Rationales Page 2
, SCI225 Pathophysiology Final Exam 2026/2027 UPDAT… 2026/2027 • Verified • Assured Grade A+
3. In the compensatory stage of hypovolemic shock, what is the primary physiological
response to maintain cardiac output?
A. Vasodilation of peripheral vessels
B. Decreased release of Antidiuretic Hormone
C. Activation of the sympathetic nervous system
D. Decreased Renin-Angiotensin-Aldosterone activity
Answer: C
Rationale: The sympathetic nervous system triggers tachycardia and vasoconstriction to maintain
blood pressure and perfusion to vital organs. Exam questions often test whether you can pick the most
practical and safe choice for the client in real situations. Focus on what the nurse can actually do right
now. Remembering this point will help you decide the best nursing action when similar questions
appear on the exam. Link the answer to the client’s current condition and risk level.
4. Which pathophysiological mechanism is central to the development of Multiple Sclerosis?
A. Depletion of dopamine in the substantia nigra
B. Immune-mediated demyelination of the central nervous system
C. Excessive production of beta-amyloid plaques
D. Destruction of acetylcholine receptors at the neuromuscular junction
Answer: B
Rationale: Multiple Sclerosis is an autoimmune disorder where the immune system attacks the myelin
sheath of nerve fibers in the brain and spinal cord. Knowing the reason behind the correct answer
makes it easier to rule out the wrong options quickly. Look for the choice that protects the client and
matches the priority need. Knowing the reason behind the correct answer makes it easier to rule out
the wrong options quickly. Look for the choice that protects the client and matches the priority need.
Exam (Elaborations) • Detailed Rationales Page 3
