NUR 631 ADVANCED PHYSIOLOGY AND PATHOPHYSIOLOGY MIDTERM EXAM
COMPLETE PRACTICE QUESTIONS AND ANSWERS | VERIFIED SOLUTIONS | GRADE
A STUDY GUIDE | UPDATED 2026/2027
NUR 631 ADVANCED PHYSIOLOGY AND PATHOPHYSIOLOGY MIDTERM EXAM
2026/2027 EDITION
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
COMPLETE PRACTICE EXAM
100 MULTIPLE-CHOICE QUESTIONS
PASSING SCORE: 70%
TESTING TIME: 120 MINUTES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TABLE OF CONTENTS
Cellular Physiology & Homeostasis
Cell Injury, Adaptation & Genetics
Inflammation & Immunity
Cardiovascular Pathophysiology
Respiratory Pathophysiology
Renal Physiology & Acid-Base Disorders
Endocrine Disorders
Neurologic Pathophysiology
Hematologic Disorders
Multisystem Disease Processes
GRAND CANYON UNIVERSITY (GCU) || ALIGNED WITH CURRENT ADVANCED
PATHOPHYSIOLOGY COURSE OUTCOMES || PROFESSIONAL STUDY GUIDE || MIDTERM
EXAM PREPARATION || 100% VERIFIED EDUCATIONAL SOLUTIONS ||
COMPREHENSIVE EXAM REVIEW || PREPARED FOR GRADUATE NURSING STUDENTS ||
PROFESSIONAL ACADEMIC USE
,Cellular Physiology & Homeostasis (Questions 1–5)
Q1. A 68-year-old patient develops severe dehydration following several days of
profuse diarrhea. Which cellular response is most likely occurring as extracellular fluid
osmolarity increases?
A. Cellular swelling due to sodium influx
B. Cellular shrinkage due to water efflux
C. Increased intracellular potassium accumulation
D. Cellular rupture from osmotic pressure
Correct Answer: 🔴 B. Cellular shrinkage due to water efflux
Explanation: 🔹 Hyperosmolar extracellular fluid draws water out of cells through
osmosis, resulting in cellular shrinkage. Option A is incorrect because swelling
occurs in hypotonic conditions. Option C is not the primary response. Option D is
associated with severe hypotonic states rather than hypertonicity. Understanding
osmotic gradients is essential in pathophysiologic assessment of fluid-volume
disorders.
Q2. A researcher inhibits the sodium-potassium ATPase pump in a tissue sample.
What is the most immediate consequence?
A. Increased active calcium transport
B. Increased intracellular sodium concentration
C. Increased extracellular potassium concentration entering cells
D. Enhanced membrane polarization
Correct Answer: 🔴 B. Increased intracellular sodium concentration
Explanation: 🔹 The sodium-potassium pump normally exports sodium and imports
potassium. Inhibition results in sodium accumulation within cells and eventual
cellular swelling. Options A and D are unrelated immediate effects. Option C is
incorrect because potassium entry decreases rather than increases.
,Q3. During a prolonged period of hypoxia, cellular ATP production declines
significantly. Which process is affected first?
A. DNA replication
B. Protein synthesis
C. Active transport mechanisms
D. Cell membrane repair
Correct Answer: 🔴 C. Active transport mechanisms
Explanation: 🔹 Active transport depends directly on ATP availability. Failure of
sodium-potassium ATPase is among the earliest manifestations of cellular injury.
DNA replication and protein synthesis are affected later. Membrane repair becomes
impaired as injury progresses.
Q4. Which statement best describes negative feedback regulation?
A. A response amplifies the original stimulus
B. The system moves farther from equilibrium
C. The response opposes deviation from a set point
D. The process occurs only in endocrine systems
Correct Answer: 🔴 C. The response opposes deviation from a set point
Explanation: 🔹 Negative feedback maintains homeostasis by reversing changes
away from physiological norms. Positive feedback amplifies changes. Homeostatic
control systems throughout the body rely heavily on negative feedback
mechanisms.
Q5. A patient with severe burns experiences widespread membrane damage. Which
cellular structure is most directly responsible for regulating movement of substances
across the cell boundary?
A. Nucleus
B. Mitochondria
, C. Plasma membrane
D. Ribosome
Correct Answer: 🔴 C. Plasma membrane
Explanation: 🔹 The plasma membrane controls selective permeability and cellular
communication. Damage disrupts fluid balance and cell integrity. Mitochondria
generate ATP, the nucleus contains genetic material, and ribosomes synthesize
proteins.
Cell Injury, Adaptation & Genetics (Questions 6–10)
Q6. A patient with longstanding hypertension develops left ventricular hypertrophy.
This adaptation is best classified as:
A. Hyperplasia
B. Metaplasia
C. Dysplasia
D. Hypertrophy
Correct Answer: 🔴 D. Hypertrophy
Explanation: 🔹 Hypertrophy involves enlargement of existing cells, commonly seen
in cardiac muscle subjected to increased workload. Hyperplasia involves increased
cell number. Metaplasia is replacement by another cell type. Dysplasia refers to
disordered growth.
Q7. A smoker develops replacement of normal bronchial ciliated epithelium with
stratified squamous epithelium. This change is known as:
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Neoplasia
Correct Answer: 🔴 C. Metaplasia
COMPLETE PRACTICE QUESTIONS AND ANSWERS | VERIFIED SOLUTIONS | GRADE
A STUDY GUIDE | UPDATED 2026/2027
NUR 631 ADVANCED PHYSIOLOGY AND PATHOPHYSIOLOGY MIDTERM EXAM
2026/2027 EDITION
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
COMPLETE PRACTICE EXAM
100 MULTIPLE-CHOICE QUESTIONS
PASSING SCORE: 70%
TESTING TIME: 120 MINUTES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TABLE OF CONTENTS
Cellular Physiology & Homeostasis
Cell Injury, Adaptation & Genetics
Inflammation & Immunity
Cardiovascular Pathophysiology
Respiratory Pathophysiology
Renal Physiology & Acid-Base Disorders
Endocrine Disorders
Neurologic Pathophysiology
Hematologic Disorders
Multisystem Disease Processes
GRAND CANYON UNIVERSITY (GCU) || ALIGNED WITH CURRENT ADVANCED
PATHOPHYSIOLOGY COURSE OUTCOMES || PROFESSIONAL STUDY GUIDE || MIDTERM
EXAM PREPARATION || 100% VERIFIED EDUCATIONAL SOLUTIONS ||
COMPREHENSIVE EXAM REVIEW || PREPARED FOR GRADUATE NURSING STUDENTS ||
PROFESSIONAL ACADEMIC USE
,Cellular Physiology & Homeostasis (Questions 1–5)
Q1. A 68-year-old patient develops severe dehydration following several days of
profuse diarrhea. Which cellular response is most likely occurring as extracellular fluid
osmolarity increases?
A. Cellular swelling due to sodium influx
B. Cellular shrinkage due to water efflux
C. Increased intracellular potassium accumulation
D. Cellular rupture from osmotic pressure
Correct Answer: 🔴 B. Cellular shrinkage due to water efflux
Explanation: 🔹 Hyperosmolar extracellular fluid draws water out of cells through
osmosis, resulting in cellular shrinkage. Option A is incorrect because swelling
occurs in hypotonic conditions. Option C is not the primary response. Option D is
associated with severe hypotonic states rather than hypertonicity. Understanding
osmotic gradients is essential in pathophysiologic assessment of fluid-volume
disorders.
Q2. A researcher inhibits the sodium-potassium ATPase pump in a tissue sample.
What is the most immediate consequence?
A. Increased active calcium transport
B. Increased intracellular sodium concentration
C. Increased extracellular potassium concentration entering cells
D. Enhanced membrane polarization
Correct Answer: 🔴 B. Increased intracellular sodium concentration
Explanation: 🔹 The sodium-potassium pump normally exports sodium and imports
potassium. Inhibition results in sodium accumulation within cells and eventual
cellular swelling. Options A and D are unrelated immediate effects. Option C is
incorrect because potassium entry decreases rather than increases.
,Q3. During a prolonged period of hypoxia, cellular ATP production declines
significantly. Which process is affected first?
A. DNA replication
B. Protein synthesis
C. Active transport mechanisms
D. Cell membrane repair
Correct Answer: 🔴 C. Active transport mechanisms
Explanation: 🔹 Active transport depends directly on ATP availability. Failure of
sodium-potassium ATPase is among the earliest manifestations of cellular injury.
DNA replication and protein synthesis are affected later. Membrane repair becomes
impaired as injury progresses.
Q4. Which statement best describes negative feedback regulation?
A. A response amplifies the original stimulus
B. The system moves farther from equilibrium
C. The response opposes deviation from a set point
D. The process occurs only in endocrine systems
Correct Answer: 🔴 C. The response opposes deviation from a set point
Explanation: 🔹 Negative feedback maintains homeostasis by reversing changes
away from physiological norms. Positive feedback amplifies changes. Homeostatic
control systems throughout the body rely heavily on negative feedback
mechanisms.
Q5. A patient with severe burns experiences widespread membrane damage. Which
cellular structure is most directly responsible for regulating movement of substances
across the cell boundary?
A. Nucleus
B. Mitochondria
, C. Plasma membrane
D. Ribosome
Correct Answer: 🔴 C. Plasma membrane
Explanation: 🔹 The plasma membrane controls selective permeability and cellular
communication. Damage disrupts fluid balance and cell integrity. Mitochondria
generate ATP, the nucleus contains genetic material, and ribosomes synthesize
proteins.
Cell Injury, Adaptation & Genetics (Questions 6–10)
Q6. A patient with longstanding hypertension develops left ventricular hypertrophy.
This adaptation is best classified as:
A. Hyperplasia
B. Metaplasia
C. Dysplasia
D. Hypertrophy
Correct Answer: 🔴 D. Hypertrophy
Explanation: 🔹 Hypertrophy involves enlargement of existing cells, commonly seen
in cardiac muscle subjected to increased workload. Hyperplasia involves increased
cell number. Metaplasia is replacement by another cell type. Dysplasia refers to
disordered growth.
Q7. A smoker develops replacement of normal bronchial ciliated epithelium with
stratified squamous epithelium. This change is known as:
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Neoplasia
Correct Answer: 🔴 C. Metaplasia
