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NSG5140 WEEK 5 MIDTERM —
ADVANCED PATHOPHYSIOLOGY
PRACTICE QUESTIONS 1–100
INTRODUCTION
NSG5140 Advanced Pathophysiology requires students to integrate cellular mechanisms,
molecular processes, altered physiologic function, and clinical manifestations rather than simply
recall disease definitions. A midterm covering advanced pathophysiology therefore requires the
learner to recognize relationships between an underlying pathologic process and the signs,
symptoms, laboratory findings, and complications that follow. This practice question bank is
designed for students preparing for a Week 5 midterm and emphasizes clinical reasoning,
application, and differentiation among closely related pathophysiologic conditions.
The questions use complex patient scenarios requiring interpretation of physiologic changes and
identification of the mechanism most directly responsible for a finding. Particular attention is
given to inflammation, cellular injury, fluid and electrolyte disturbances, acid-base physiology,
hemodynamics, endocrine regulation, cardiovascular mechanisms, renal function, and immune
responses. Each item contains four answer choices with one best answer, followed by a detailed
rationale explaining both the correct mechanism and why the alternatives are less appropriate.
Use the questions to identify knowledge gaps, then review the underlying mechanisms rather
than memorizing isolated answers.
CONTENT AREA OVERVIEW
Content Area Questions Key Topics Weight
Hypoxia, apoptosis, necrosis, adaptation,
Cellular Injury & Adaptation 1–12 12%
oxidative injury
Inflammation & Acute/chronic inflammation, cytokines,
13–24 12%
Immunopathology hypersensitivity, autoimmunity
Fluid, Electrolyte & Acid- Sodium, potassium, calcium, osmolality,
25–38 14%
Base Disorders compensation
Perfusion, preload, afterload, shock
Hemodynamics & Shock 39–48 10%
mechanisms
Cardiovascular Heart failure, ischemia, vascular disease,
49–60 12%
Pathophysiology hypertension
V/Q mismatch, diffusion, respiratory failure,
Respiratory Pathophysiology 61–70 10%
obstructive/restrictive disease
Renal & Acid-Base AKI, CKD, RAAS, filtration, renal
71–80 10%
Pathophysiology compensation
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Content Area Questions Key Topics Weight
Endocrine & Metabolic
81–90 Insulin, thyroid, adrenal, metabolic regulation 10%
Disorders
Integrated Multisystem Complex clinical reasoning and systemic
91–100 10%
Pathophysiology interactions
QUESTIONS 1–100
Q1:
A patient experiences prolonged hypotension following major blood loss. Which cellular change
is most directly responsible for early reversible cellular injury?
A) Increased oxidative phosphorylation
B) Reduced ATP production resulting from impaired mitochondrial oxygen availability
C) Increased intracellular protein synthesis
D) Increased activity of the sodium-potassium ATPase
Rationale: The correct answer is B because inadequate oxygen delivery limits oxidative
phosphorylation and ATP generation. ATP depletion impairs energy-dependent membrane
transport, causing cellular swelling and electrolyte abnormalities. Option A is incorrect because
oxidative phosphorylation decreases when oxygen is insufficient. Option C is incorrect because
protein synthesis generally decreases during significant cellular injury. Option D is incorrect
because the sodium-potassium ATPase requires ATP and becomes impaired rather than
increasingly active.
Q2:
A patient with prolonged tissue ischemia develops irreversible cellular injury. Which finding
most strongly indicates progression from reversible to irreversible injury?
A) Mild cellular swelling
B) Transient fatty change
C) Severe mitochondrial dysfunction with loss of membrane integrity
D) Temporary reduction in protein synthesis
Rationale: The correct answer is C because irreversible injury is associated with profound
mitochondrial dysfunction and damage to cellular and organelle membranes. Once membrane
integrity is lost, cellular contents leak and normal compartmentalization is disrupted. Options A
and B are generally reversible manifestations. Option D can occur during reversible injury and
does not by itself establish irreversibility.
Q3:
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A patient develops skeletal muscle injury after prolonged limb compression. Laboratory testing
reveals markedly elevated creatine kinase and myoglobinuria. Which cellular process best
explains the injury?
A) Apoptosis
B) Necrotic cell injury with membrane disruption
C) Physiologic hypertrophy
D) Reversible metaplasia
Rationale: The correct answer is B because severe muscle injury causes membrane disruption
and release of intracellular enzymes and myoglobin, characteristic of necrosis. Apoptosis is an
energy-dependent programmed process that generally preserves membrane integrity.
Hypertrophy is an adaptive increase in cell size, while metaplasia involves replacement of one
mature cell type by another.
Q4:
A patient has repeated exposure to a chemical irritant that causes chronic epithelial stress. The
affected epithelium changes from one differentiated cell type to another better able to tolerate the
irritation. Which adaptive mechanism is occurring?
A) Dysplasia
B) Metaplasia
C) Necrosis
D) Apoptosis
Rationale: The correct answer is B because metaplasia is a reversible adaptive substitution of
one differentiated cell type for another. It can occur in response to chronic irritation. Dysplasia
involves disordered cellular growth and atypia. Necrosis represents uncontrolled cell injury and
death, while apoptosis is programmed cell death.
Q5:
A patient has extensive DNA damage following exposure to ionizing radiation. Which
mechanism allows the body to eliminate severely damaged cells without provoking substantial
inflammation?
A) Necrosis
B) Autophagy
C) Apoptosis
D) Cellular hypertrophy
Rationale: The correct answer is C because apoptosis is regulated programmed cell death that
packages cellular components for removal while generally minimizing inflammatory response.
Necrosis commonly causes membrane rupture and inflammation. Autophagy primarily involves
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intracellular degradation and recycling, while hypertrophy represents increased cell size rather
than elimination.
Q6:
A patient with ischemic injury develops increased intracellular calcium. Why is this change
particularly damaging?
A) Calcium prevents activation of proteolytic enzymes
B) Calcium increases ATP production
C) Calcium activates enzymes that damage membranes, proteins, and nucleic acids
D) Calcium blocks mitochondrial permeability changes
Rationale: The correct answer is C because excessive intracellular calcium activates
phospholipases, proteases, endonucleases, and ATPases. These enzymes contribute to
membrane, protein, and DNA injury. The other options describe effects opposite to those
associated with calcium-mediated cellular injury.
Q7:
A patient with severe reperfusion injury experiences additional tissue damage after blood flow is
restored. Which mechanism is most responsible?
A) Complete elimination of reactive oxygen species
B) Generation of reactive oxygen species during reperfusion
C) Permanent suppression of neutrophil activity
D) Decreased endothelial activation
Rationale: The correct answer is B because reperfusion can generate reactive oxygen species
that intensify oxidative damage to lipids, proteins, and DNA. Neutrophils and inflammatory
mediators can further contribute. Options A, C, and D are inconsistent with the mechanisms
underlying reperfusion injury.
Q8:
A patient with chronic pressure overload develops ventricular enlargement due primarily to
increased myocardial cell size. Which adaptation is occurring?
A) Hyperplasia
B) Hypertrophy
C) Metaplasia
D) Atrophy
Rationale: The correct answer is B because cardiac muscle cells primarily respond to increased
workload by increasing cell size rather than undergoing substantial hyperplasia. Hyperplasia
NSG5140 WEEK 5 MIDTERM —
ADVANCED PATHOPHYSIOLOGY
PRACTICE QUESTIONS 1–100
INTRODUCTION
NSG5140 Advanced Pathophysiology requires students to integrate cellular mechanisms,
molecular processes, altered physiologic function, and clinical manifestations rather than simply
recall disease definitions. A midterm covering advanced pathophysiology therefore requires the
learner to recognize relationships between an underlying pathologic process and the signs,
symptoms, laboratory findings, and complications that follow. This practice question bank is
designed for students preparing for a Week 5 midterm and emphasizes clinical reasoning,
application, and differentiation among closely related pathophysiologic conditions.
The questions use complex patient scenarios requiring interpretation of physiologic changes and
identification of the mechanism most directly responsible for a finding. Particular attention is
given to inflammation, cellular injury, fluid and electrolyte disturbances, acid-base physiology,
hemodynamics, endocrine regulation, cardiovascular mechanisms, renal function, and immune
responses. Each item contains four answer choices with one best answer, followed by a detailed
rationale explaining both the correct mechanism and why the alternatives are less appropriate.
Use the questions to identify knowledge gaps, then review the underlying mechanisms rather
than memorizing isolated answers.
CONTENT AREA OVERVIEW
Content Area Questions Key Topics Weight
Hypoxia, apoptosis, necrosis, adaptation,
Cellular Injury & Adaptation 1–12 12%
oxidative injury
Inflammation & Acute/chronic inflammation, cytokines,
13–24 12%
Immunopathology hypersensitivity, autoimmunity
Fluid, Electrolyte & Acid- Sodium, potassium, calcium, osmolality,
25–38 14%
Base Disorders compensation
Perfusion, preload, afterload, shock
Hemodynamics & Shock 39–48 10%
mechanisms
Cardiovascular Heart failure, ischemia, vascular disease,
49–60 12%
Pathophysiology hypertension
V/Q mismatch, diffusion, respiratory failure,
Respiratory Pathophysiology 61–70 10%
obstructive/restrictive disease
Renal & Acid-Base AKI, CKD, RAAS, filtration, renal
71–80 10%
Pathophysiology compensation
,2|Page
Content Area Questions Key Topics Weight
Endocrine & Metabolic
81–90 Insulin, thyroid, adrenal, metabolic regulation 10%
Disorders
Integrated Multisystem Complex clinical reasoning and systemic
91–100 10%
Pathophysiology interactions
QUESTIONS 1–100
Q1:
A patient experiences prolonged hypotension following major blood loss. Which cellular change
is most directly responsible for early reversible cellular injury?
A) Increased oxidative phosphorylation
B) Reduced ATP production resulting from impaired mitochondrial oxygen availability
C) Increased intracellular protein synthesis
D) Increased activity of the sodium-potassium ATPase
Rationale: The correct answer is B because inadequate oxygen delivery limits oxidative
phosphorylation and ATP generation. ATP depletion impairs energy-dependent membrane
transport, causing cellular swelling and electrolyte abnormalities. Option A is incorrect because
oxidative phosphorylation decreases when oxygen is insufficient. Option C is incorrect because
protein synthesis generally decreases during significant cellular injury. Option D is incorrect
because the sodium-potassium ATPase requires ATP and becomes impaired rather than
increasingly active.
Q2:
A patient with prolonged tissue ischemia develops irreversible cellular injury. Which finding
most strongly indicates progression from reversible to irreversible injury?
A) Mild cellular swelling
B) Transient fatty change
C) Severe mitochondrial dysfunction with loss of membrane integrity
D) Temporary reduction in protein synthesis
Rationale: The correct answer is C because irreversible injury is associated with profound
mitochondrial dysfunction and damage to cellular and organelle membranes. Once membrane
integrity is lost, cellular contents leak and normal compartmentalization is disrupted. Options A
and B are generally reversible manifestations. Option D can occur during reversible injury and
does not by itself establish irreversibility.
Q3:
,3|Page
A patient develops skeletal muscle injury after prolonged limb compression. Laboratory testing
reveals markedly elevated creatine kinase and myoglobinuria. Which cellular process best
explains the injury?
A) Apoptosis
B) Necrotic cell injury with membrane disruption
C) Physiologic hypertrophy
D) Reversible metaplasia
Rationale: The correct answer is B because severe muscle injury causes membrane disruption
and release of intracellular enzymes and myoglobin, characteristic of necrosis. Apoptosis is an
energy-dependent programmed process that generally preserves membrane integrity.
Hypertrophy is an adaptive increase in cell size, while metaplasia involves replacement of one
mature cell type by another.
Q4:
A patient has repeated exposure to a chemical irritant that causes chronic epithelial stress. The
affected epithelium changes from one differentiated cell type to another better able to tolerate the
irritation. Which adaptive mechanism is occurring?
A) Dysplasia
B) Metaplasia
C) Necrosis
D) Apoptosis
Rationale: The correct answer is B because metaplasia is a reversible adaptive substitution of
one differentiated cell type for another. It can occur in response to chronic irritation. Dysplasia
involves disordered cellular growth and atypia. Necrosis represents uncontrolled cell injury and
death, while apoptosis is programmed cell death.
Q5:
A patient has extensive DNA damage following exposure to ionizing radiation. Which
mechanism allows the body to eliminate severely damaged cells without provoking substantial
inflammation?
A) Necrosis
B) Autophagy
C) Apoptosis
D) Cellular hypertrophy
Rationale: The correct answer is C because apoptosis is regulated programmed cell death that
packages cellular components for removal while generally minimizing inflammatory response.
Necrosis commonly causes membrane rupture and inflammation. Autophagy primarily involves
, 4|Page
intracellular degradation and recycling, while hypertrophy represents increased cell size rather
than elimination.
Q6:
A patient with ischemic injury develops increased intracellular calcium. Why is this change
particularly damaging?
A) Calcium prevents activation of proteolytic enzymes
B) Calcium increases ATP production
C) Calcium activates enzymes that damage membranes, proteins, and nucleic acids
D) Calcium blocks mitochondrial permeability changes
Rationale: The correct answer is C because excessive intracellular calcium activates
phospholipases, proteases, endonucleases, and ATPases. These enzymes contribute to
membrane, protein, and DNA injury. The other options describe effects opposite to those
associated with calcium-mediated cellular injury.
Q7:
A patient with severe reperfusion injury experiences additional tissue damage after blood flow is
restored. Which mechanism is most responsible?
A) Complete elimination of reactive oxygen species
B) Generation of reactive oxygen species during reperfusion
C) Permanent suppression of neutrophil activity
D) Decreased endothelial activation
Rationale: The correct answer is B because reperfusion can generate reactive oxygen species
that intensify oxidative damage to lipids, proteins, and DNA. Neutrophils and inflammatory
mediators can further contribute. Options A, C, and D are inconsistent with the mechanisms
underlying reperfusion injury.
Q8:
A patient with chronic pressure overload develops ventricular enlargement due primarily to
increased myocardial cell size. Which adaptation is occurring?
A) Hyperplasia
B) Hypertrophy
C) Metaplasia
D) Atrophy
Rationale: The correct answer is B because cardiac muscle cells primarily respond to increased
workload by increasing cell size rather than undergoing substantial hyperplasia. Hyperplasia
