NR 507 Advanced Pathophysiology - Midterm Exam (2026/2027) Chamberlain University
NR 507 Advanced Pathophysiology
Midterm Examination - Latest
Chamberlain University | College of Nursing | Advanced Practice Nursing Education
Course NR 507 Advanced Pathophysiology Total Questions 100
Examination Midterm (Weeks 1-4 content) Format Multiple Choice (A-D)
Term Academic Year Cognitive Mix 25% Recall / 55% Application / 20% Analysis
Question Style 70% Scenario / 20% Direct Recall / 10% Clinical
AnswerJudgment
Key Embedded with Rationales
Instructions to Candidates:
This midterm examination consists of 100 multiple-choice questions organized into nine (9)
content sections aligned with the Chamberlain University NR 507 Advanced Pathophysiology
curriculum (Weeks 1-4). Each question has one (1) best answer marked [CORRECT] and is
followed by a comprehensive rationale grounded in current pathophysiologic evidence. Read
each stem carefully; for scenario-based items, identify the underlying mechanism before
selecting an answer. The correct answer and rationale appear immediately beneath each
question to support formative learning. Verify that all 100 questions are present before
beginning. Sections: (1) Cellular Adaptation, Injury, and Genetics (Q1-15); (2) Immunology and
Inflammation (Q16-25); (3) Hematology (Q26-40); (4) Cardiovascular Pathophysiology (Q41-55);
(5) Pulmonary Pathophysiology (Q56-65); (6) Renal and Urinary Pathophysiology (Q66-75); (7)
Endocrine Pathophysiology (Q76-85); (8) Fluid, Electrolyte, and Acid-Base Disorders (Q86-92);
(9) Integrated Clinical Scenarios (Q93-100).
SECTION 1: Cellular Adaptation, Injury, and Genetics (Q1 - Q15)
Confidential - For NR 507 Midterm Examination Use Page 1
,NR 507 Advanced Pathophysiology - Midterm Exam (2026/2027) Chamberlain University
Q1: A 68-year-old retired nurse has been on prolonged bed rest for 6 weeks following a
hip fracture. Physical examination reveals a noticeable decrease in the size and
strength of the muscles in both lower extremities. Which cellular adaptation best
explains this finding?
A. Atrophy due to disuse and decreased functional demand [CORRECT]
B. Hypertrophy from compensatory workload increase
C. Hyperplasia from increased hormonal stimulation
D. Metaplasia from chronic irritation of muscle fibers
Correct Answer: A
Rationale: Prolonged disuse leads to cellular atrophy, defined as a decrease in cell size and
number of organelles resulting in reduced tissue mass. Hypertrophy involves increased cell size,
hyperplasia involves increased cell number (typically in labile/dividing tissues), and metaplasia is
the reversible replacement of one adult cell type by another (e.g., squamous metaplasia in
bronchi). Skeletal muscle under disuse specifically downregulates protein synthesis and
increases proteolysis, producing visible wasting consistent with disuse atrophy, a central concept
in NR 507 Week 1 cellular adaptation content.
Q2: A 58-year-old male with long-standing essential hypertension has an
echocardiogram demonstrating increased left ventricular wall thickness with normal
chamber volume. Which mechanism is the primary driver of this cardiac adaptation?
A. Hyperplasia of cardiac myocytes in response to pressure overload
B. Hypertrophy of cardiac myocytes due to increased workload [CORRECT]
C. Metaplasia of endocardial cells under shear stress
D. Dysplastic changes secondary to chronic ischemia
Correct Answer: B
Rationale: Cardiac myocytes are terminally differentiated and incapable of meaningful
hyperplasia; they respond to pressure overload by hypertrophy (increase in individual cell size
and contractile protein content). The left ventricle thickens to normalize wall stress (Laplace's
law). Hyperplasia does not occur in cardiac muscle, metaplasia requires a replaceable
epithelium, and dysplasia implies disordered premalignant growth. This pathologic hypertrophy
eventually progresses to decompensation and heart failure, a key Chamberlain Week 1 concept
linking adaptation to disease.
Confidential - For NR 507 Midterm Examination Use Page 2
,NR 507 Advanced Pathophysiology - Midterm Exam (2026/2027) Chamberlain University
Q3: A 45-year-old female reports heavy menstrual periods. Endometrial biopsy shows
increased glandular epithelial cell number. Her history reveals many years of
unopposed estrogen therapy. Which cellular adaptation is most consistent with these
findings?
A. Physiologic compensatory hyperplasia of the endometrium
B. Pathologic hyperplasia driven by unopposed estrogen stimulation [CORRECT]
C. Squamous metaplasia secondary to chronic inflammation
D. Atrophy from prolonged progesterone exposure
Correct Answer: B
Rationale: Endometrial glandular epithelium is hormonally responsive and capable of true
hyperplasia (increased cell number). Unopposed estrogen drives proliferation of the endometrial
glands producing endometrial hyperplasia, which is pathologic and a precursor to endometrial
carcinoma. Physiologic hyperplasia occurs in liver regeneration and the uterine myometrium
during pregnancy. Metaplasia is replacement of one cell type by another, and atrophy is decrease
in cell size. This is a high-yield NR 507 distinction between physiologic and pathologic
hyperplasia.
Q4: A 52-year-old male with a 20-year history of chronic GERD undergoes upper
endoscopy. Biopsy of the distal esophagus reveals intestinal-type columnar epithelium
with goblet cells replacing the normal squamous epithelium. What is the most accurate
description of this process?
A. Barrett's esophagus, an example of metaplasia that is reversible and benign
B. Barrett's esophagus, an example of intestinal metaplasia with premalignant potential
[CORRECT]
C. Squamous dysplasia with high-grade cytologic atypia
D. Glandular hyperplasia with no malignant risk
Correct Answer: B
Rationale: Barrett's esophagus is the classic example of metaplasia, in which chronic acid
exposure induces the replacement of normal stratified squamous epithelium with intestinal-type
columnar epithelium containing goblet cells. Although metaplasia is an adaptive response,
Barrett's confers a significantly increased risk of esophageal adenocarcinoma and is therefore
considered premalignant. Dysplasia implies disordered cellular maturation, not glandular
replacement. Hyperplasia increases cell number without changing cell type. Surveillance
endoscopy is required, a recurring theme on Chamberlain midterm content.
Confidential - For NR 507 Midterm Examination Use Page 3
, NR 507 Advanced Pathophysiology - Midterm Exam (2026/2027) Chamberlain University
Q5: Which statement most accurately distinguishes dysplasia from metaplasia?
A. Dysplasia involves a reversible change in cell type; metaplasia involves abnormal cell
maturation.
B. Dysplasia involves abnormal proliferation and loss of cellular uniformity; metaplasia
involves replacement of one adult cell type by another. [CORRECT]
C. Dysplasia is irreversible; metaplasia is always malignant.
D. Dysplasia only occurs in glandular epithelium; metaplasia only occurs in mesenchymal
tissue.
Correct Answer: B
Rationale: Dysplasia is characterized by disorderly proliferation, pleomorphism,
hyperchromatic nuclei, and loss of architectural orientation; it is reversible if the inciting
stimulus is removed but is considered premalignant. Metaplasia, in contrast, is the reversible
substitution of one differentiated adult cell type by another, also adaptive and usually reversible.
Neither is inherently malignant, but both can precede malignancy. Chamberlain NR 507
emphasizes this distinction in cellular adaptation content because of its direct clinical
implication for cancer screening.
Q6: A patient sustains an acute myocardial infarction. At the cellular level, which
sequence of events most accurately describes the early pathogenesis of ischemic injury
in cardiac myocytes?
A. ATP depletion leads to mitochondrial swelling, loss of cristae, and ROS generation
that damages DNA and activates PARP. [CORRECT]
B. Immediate membrane rupture causes release of lysosomal enzymes and caseous
necrosis.
C. Calcium influx initially decreases, followed by hyperactivation of Na+/K+ ATPase and
cell shrinkage.
D. Activation of caspase-9 initiates apoptosis with phosphatidylserine externalization
within seconds.
Correct Answer: A
Rationale: Ischemia is the most common cause of cellular injury. Hypoxia impairs oxidative
phosphorylation causing ATP depletion, failure of Na+/K+ ATPase, cellular swelling,
mitochondrial swelling with loss of cristae, and detachment of ribosomes. Reperfusion generates
reactive oxygen species (ROS) that damage DNA and activate PARP, exacerbating injury.
Membrane rupture occurs later in necrosis. Calcium influx increases (not decreases). Apoptosis
via caspases is a later, distinct mechanism. This sequence is foundational to NR 507 Week 1
pathophysiology of cellular injury.
Confidential - For NR 507 Midterm Examination Use Page 4
NR 507 Advanced Pathophysiology
Midterm Examination - Latest
Chamberlain University | College of Nursing | Advanced Practice Nursing Education
Course NR 507 Advanced Pathophysiology Total Questions 100
Examination Midterm (Weeks 1-4 content) Format Multiple Choice (A-D)
Term Academic Year Cognitive Mix 25% Recall / 55% Application / 20% Analysis
Question Style 70% Scenario / 20% Direct Recall / 10% Clinical
AnswerJudgment
Key Embedded with Rationales
Instructions to Candidates:
This midterm examination consists of 100 multiple-choice questions organized into nine (9)
content sections aligned with the Chamberlain University NR 507 Advanced Pathophysiology
curriculum (Weeks 1-4). Each question has one (1) best answer marked [CORRECT] and is
followed by a comprehensive rationale grounded in current pathophysiologic evidence. Read
each stem carefully; for scenario-based items, identify the underlying mechanism before
selecting an answer. The correct answer and rationale appear immediately beneath each
question to support formative learning. Verify that all 100 questions are present before
beginning. Sections: (1) Cellular Adaptation, Injury, and Genetics (Q1-15); (2) Immunology and
Inflammation (Q16-25); (3) Hematology (Q26-40); (4) Cardiovascular Pathophysiology (Q41-55);
(5) Pulmonary Pathophysiology (Q56-65); (6) Renal and Urinary Pathophysiology (Q66-75); (7)
Endocrine Pathophysiology (Q76-85); (8) Fluid, Electrolyte, and Acid-Base Disorders (Q86-92);
(9) Integrated Clinical Scenarios (Q93-100).
SECTION 1: Cellular Adaptation, Injury, and Genetics (Q1 - Q15)
Confidential - For NR 507 Midterm Examination Use Page 1
,NR 507 Advanced Pathophysiology - Midterm Exam (2026/2027) Chamberlain University
Q1: A 68-year-old retired nurse has been on prolonged bed rest for 6 weeks following a
hip fracture. Physical examination reveals a noticeable decrease in the size and
strength of the muscles in both lower extremities. Which cellular adaptation best
explains this finding?
A. Atrophy due to disuse and decreased functional demand [CORRECT]
B. Hypertrophy from compensatory workload increase
C. Hyperplasia from increased hormonal stimulation
D. Metaplasia from chronic irritation of muscle fibers
Correct Answer: A
Rationale: Prolonged disuse leads to cellular atrophy, defined as a decrease in cell size and
number of organelles resulting in reduced tissue mass. Hypertrophy involves increased cell size,
hyperplasia involves increased cell number (typically in labile/dividing tissues), and metaplasia is
the reversible replacement of one adult cell type by another (e.g., squamous metaplasia in
bronchi). Skeletal muscle under disuse specifically downregulates protein synthesis and
increases proteolysis, producing visible wasting consistent with disuse atrophy, a central concept
in NR 507 Week 1 cellular adaptation content.
Q2: A 58-year-old male with long-standing essential hypertension has an
echocardiogram demonstrating increased left ventricular wall thickness with normal
chamber volume. Which mechanism is the primary driver of this cardiac adaptation?
A. Hyperplasia of cardiac myocytes in response to pressure overload
B. Hypertrophy of cardiac myocytes due to increased workload [CORRECT]
C. Metaplasia of endocardial cells under shear stress
D. Dysplastic changes secondary to chronic ischemia
Correct Answer: B
Rationale: Cardiac myocytes are terminally differentiated and incapable of meaningful
hyperplasia; they respond to pressure overload by hypertrophy (increase in individual cell size
and contractile protein content). The left ventricle thickens to normalize wall stress (Laplace's
law). Hyperplasia does not occur in cardiac muscle, metaplasia requires a replaceable
epithelium, and dysplasia implies disordered premalignant growth. This pathologic hypertrophy
eventually progresses to decompensation and heart failure, a key Chamberlain Week 1 concept
linking adaptation to disease.
Confidential - For NR 507 Midterm Examination Use Page 2
,NR 507 Advanced Pathophysiology - Midterm Exam (2026/2027) Chamberlain University
Q3: A 45-year-old female reports heavy menstrual periods. Endometrial biopsy shows
increased glandular epithelial cell number. Her history reveals many years of
unopposed estrogen therapy. Which cellular adaptation is most consistent with these
findings?
A. Physiologic compensatory hyperplasia of the endometrium
B. Pathologic hyperplasia driven by unopposed estrogen stimulation [CORRECT]
C. Squamous metaplasia secondary to chronic inflammation
D. Atrophy from prolonged progesterone exposure
Correct Answer: B
Rationale: Endometrial glandular epithelium is hormonally responsive and capable of true
hyperplasia (increased cell number). Unopposed estrogen drives proliferation of the endometrial
glands producing endometrial hyperplasia, which is pathologic and a precursor to endometrial
carcinoma. Physiologic hyperplasia occurs in liver regeneration and the uterine myometrium
during pregnancy. Metaplasia is replacement of one cell type by another, and atrophy is decrease
in cell size. This is a high-yield NR 507 distinction between physiologic and pathologic
hyperplasia.
Q4: A 52-year-old male with a 20-year history of chronic GERD undergoes upper
endoscopy. Biopsy of the distal esophagus reveals intestinal-type columnar epithelium
with goblet cells replacing the normal squamous epithelium. What is the most accurate
description of this process?
A. Barrett's esophagus, an example of metaplasia that is reversible and benign
B. Barrett's esophagus, an example of intestinal metaplasia with premalignant potential
[CORRECT]
C. Squamous dysplasia with high-grade cytologic atypia
D. Glandular hyperplasia with no malignant risk
Correct Answer: B
Rationale: Barrett's esophagus is the classic example of metaplasia, in which chronic acid
exposure induces the replacement of normal stratified squamous epithelium with intestinal-type
columnar epithelium containing goblet cells. Although metaplasia is an adaptive response,
Barrett's confers a significantly increased risk of esophageal adenocarcinoma and is therefore
considered premalignant. Dysplasia implies disordered cellular maturation, not glandular
replacement. Hyperplasia increases cell number without changing cell type. Surveillance
endoscopy is required, a recurring theme on Chamberlain midterm content.
Confidential - For NR 507 Midterm Examination Use Page 3
, NR 507 Advanced Pathophysiology - Midterm Exam (2026/2027) Chamberlain University
Q5: Which statement most accurately distinguishes dysplasia from metaplasia?
A. Dysplasia involves a reversible change in cell type; metaplasia involves abnormal cell
maturation.
B. Dysplasia involves abnormal proliferation and loss of cellular uniformity; metaplasia
involves replacement of one adult cell type by another. [CORRECT]
C. Dysplasia is irreversible; metaplasia is always malignant.
D. Dysplasia only occurs in glandular epithelium; metaplasia only occurs in mesenchymal
tissue.
Correct Answer: B
Rationale: Dysplasia is characterized by disorderly proliferation, pleomorphism,
hyperchromatic nuclei, and loss of architectural orientation; it is reversible if the inciting
stimulus is removed but is considered premalignant. Metaplasia, in contrast, is the reversible
substitution of one differentiated adult cell type by another, also adaptive and usually reversible.
Neither is inherently malignant, but both can precede malignancy. Chamberlain NR 507
emphasizes this distinction in cellular adaptation content because of its direct clinical
implication for cancer screening.
Q6: A patient sustains an acute myocardial infarction. At the cellular level, which
sequence of events most accurately describes the early pathogenesis of ischemic injury
in cardiac myocytes?
A. ATP depletion leads to mitochondrial swelling, loss of cristae, and ROS generation
that damages DNA and activates PARP. [CORRECT]
B. Immediate membrane rupture causes release of lysosomal enzymes and caseous
necrosis.
C. Calcium influx initially decreases, followed by hyperactivation of Na+/K+ ATPase and
cell shrinkage.
D. Activation of caspase-9 initiates apoptosis with phosphatidylserine externalization
within seconds.
Correct Answer: A
Rationale: Ischemia is the most common cause of cellular injury. Hypoxia impairs oxidative
phosphorylation causing ATP depletion, failure of Na+/K+ ATPase, cellular swelling,
mitochondrial swelling with loss of cristae, and detachment of ribosomes. Reperfusion generates
reactive oxygen species (ROS) that damage DNA and activate PARP, exacerbating injury.
Membrane rupture occurs later in necrosis. Calcium influx increases (not decreases). Apoptosis
via caspases is a later, distinct mechanism. This sequence is foundational to NR 507 Week 1
pathophysiology of cellular injury.
Confidential - For NR 507 Midterm Examination Use Page 4
