SCI225 Pathophysiology Midterm Comprehensive Exam… 2026/2027 • Verified • Assured Grade A+
✓ VERIFIED • 2026/2027 UPDATE • 100% ACCURATE
SCI225 Pathophysiology Midterm Comprehensive 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 Midterm Comprehensive Exam… 2026/2027 • Verified • Assured Grade A+
Questions & Verified Answers
1. Which process describes the replacement of one mature cell type by another, less mature
or different cell type, often as a response to chronic irritation?
A. Atrophy
B. Hyperplasia
C. Dysplasia
D. Metaplasia
Answer: D
Rationale: Metaplasia is the reversible replacement of one mature cell type by another, such as the
change in bronchial lining from ciliated columnar cells to stratified squamous cells in smokers. 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. Understanding this helps the nurse
notice early warning signs and act before the problem gets worse. Early action often prevents bigger
complications for the client.
2. A patient presents with muscle weakness, cardiac arrhythmias, and an EKG showing
prominent U-waves. Which electrolyte imbalance is most likely?
A. Hypernatremia
B. Hypomagnesemia
C. Hypercalcemia
D. Hypokalemia
Answer: D
Rationale: Hypokalemia (low potassium) typically manifests as muscle weakness, dysrhythmias, and
specific EKG changes like U-waves and flattened T-waves. 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.
Exam (Elaborations) • Detailed Rationales Page 2
, SCI225 Pathophysiology Midterm Comprehensive Exam… 2026/2027 • Verified • Assured Grade A+
3. What is the primary mechanism behind Type I Hypersensitivity reactions?
A. IgG antibodies binding to cell surface antigens
B. Cytotoxic T-cells attacking host cells
C. Immune complexes depositing in tissue walls
D. IgE binding to mast cells and releasing histamine
Answer: D
Rationale: Type I hypersensitivity is IgE-mediated, triggering mast cell degranulation and the release
of histamine and other inflammatory mediators. In practice, this guides the nurse to set priorities and
protect the client from harm. Safety, nutrition, and clear communication are frequent priorities. 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.
4. In the TNM cancer staging system, what does the ‘N’ represent?
A. Involvement of regional lymph nodes
B. Nature of the primary site
C. Number of tumors
D. Necrosis within the tumor
Answer: A
Rationale: In the TNM system, T stands for tumor size, N for regional lymph node involvement, and M
for distant metastasis. 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.
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 3
✓ VERIFIED • 2026/2027 UPDATE • 100% ACCURATE
SCI225 Pathophysiology Midterm Comprehensive 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 Midterm Comprehensive Exam… 2026/2027 • Verified • Assured Grade A+
Questions & Verified Answers
1. Which process describes the replacement of one mature cell type by another, less mature
or different cell type, often as a response to chronic irritation?
A. Atrophy
B. Hyperplasia
C. Dysplasia
D. Metaplasia
Answer: D
Rationale: Metaplasia is the reversible replacement of one mature cell type by another, such as the
change in bronchial lining from ciliated columnar cells to stratified squamous cells in smokers. 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. Understanding this helps the nurse
notice early warning signs and act before the problem gets worse. Early action often prevents bigger
complications for the client.
2. A patient presents with muscle weakness, cardiac arrhythmias, and an EKG showing
prominent U-waves. Which electrolyte imbalance is most likely?
A. Hypernatremia
B. Hypomagnesemia
C. Hypercalcemia
D. Hypokalemia
Answer: D
Rationale: Hypokalemia (low potassium) typically manifests as muscle weakness, dysrhythmias, and
specific EKG changes like U-waves and flattened T-waves. 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.
Exam (Elaborations) • Detailed Rationales Page 2
, SCI225 Pathophysiology Midterm Comprehensive Exam… 2026/2027 • Verified • Assured Grade A+
3. What is the primary mechanism behind Type I Hypersensitivity reactions?
A. IgG antibodies binding to cell surface antigens
B. Cytotoxic T-cells attacking host cells
C. Immune complexes depositing in tissue walls
D. IgE binding to mast cells and releasing histamine
Answer: D
Rationale: Type I hypersensitivity is IgE-mediated, triggering mast cell degranulation and the release
of histamine and other inflammatory mediators. In practice, this guides the nurse to set priorities and
protect the client from harm. Safety, nutrition, and clear communication are frequent priorities. 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.
4. In the TNM cancer staging system, what does the ‘N’ represent?
A. Involvement of regional lymph nodes
B. Nature of the primary site
C. Number of tumors
D. Necrosis within the tumor
Answer: A
Rationale: In the TNM system, T stands for tumor size, N for regional lymph node involvement, and M
for distant metastasis. 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.
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 3
