NSG5140 WEEK 5 MIDTERM: 100
ADVANCED PATHOPHYSIOLOGY
QUESTIONS WITH DETAILED
RATIONALES FOR EXAM SUCCESS
(2026/2027 UPDATE)
EXAM OVERVIEW
This comprehensive review guide is designed to prepare students for the NSG5140 Week 5
Midterm Examination in Advanced Pathophysiology. The exam covers core concepts in
cellular adaptation, injury, inflammation, immunity, and neoplasia, as outlined in standard
advanced pathophysiology curricula . This guide provides 100 practice questions with verified
answers and detailed rationales to reinforce critical thinking and support exam success.
SECTION 1: CELLULAR ADAPTATION AND INJURY (Questions 1-25)
Question 1
A patient with chronic hypertension develops left ventricular wall thickening. This represents
which type of cellular adaptation?
A. Increased myocyte number due to cell division
B. Increased myocyte size due to increased workload
C. Replacement of cardiac cells with fibrous tissue
D. Transformation of cardiac cells into smooth muscle
B. Increased myocyte size due to increased workload
RATIONALE: Cardiac myocytes are terminally differentiated and respond to increased
workload by hypertrophy (increased cell size), not hyperplasia . The increased workload from
chronic hypertension causes the myocytes to enlarge, resulting in left ventricular wall
thickening .
Question 2
During ischemic injury, failure of the Na⁺/K⁺ ATPase pump leads to:
,A. Cellular dehydration and shrinkage
B. Intracellular sodium accumulation and cellular swelling
C. Increased ATP production
D. Enhanced protein synthesis
B. Intracellular sodium accumulation and cellular swelling
RATIONALE: ATP depletion causes failure of the Na⁺/K⁺ ATPase pump, leading to
intracellular sodium accumulation, water influx, and cellular swelling . This is the hallmark of
hypoxic cellular injury .
Question 3
Which cellular organelle is primarily responsible for ATP production through oxidative
phosphorylation?
A. Ribosome
B. Golgi apparatus
C. Mitochondria
D. Endoplasmic reticulum
C. Mitochondria
RATIONALE: Mitochondria are the primary site of ATP production through oxidative
phosphorylation . They contain the electron transport chain and ATP synthase, which generate
ATP from ADP and inorganic phosphate .
Question 4
Which of the following is a hallmark of reversible cellular injury?
A. Nuclear pyknosis
B. Failure of ion pumps leading to cell swelling
C. Membrane rupture
D. Lysosomal enzyme release
B. Failure of ion pumps leading to cell swelling
RATIONALE: Reversible injury involves cellular swelling due to ion pump failure . If the
insult is removed, the cell can recover . Irreversible injury involves membrane damage and
nuclear changes such as pyknosis .
Question 5
, Which of the following cellular changes is characterized by an increase in the number of
cells in an organ or tissue?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Atrophy
B. Hyperplasia
RATIONALE: Hyperplasia is an increase in the number of cells in an organ or tissue . It can be
physiologic (e.g., endometrial hyperplasia during the menstrual cycle) or pathologic (e.g., benign
prostatic hyperplasia) . Hypertrophy is an increase in cell size .
Question 6
A patient with Barrett's esophagus has developed which type of cellular adaptation?
A. Metaplasia
B. Hypertrophy
C. Hyperplasia
D. Atrophy
A. Metaplasia
RATIONALE: Barrett's esophagus is a classic example of metaplasia, where the normal
squamous epithelium of the esophagus is replaced by columnar epithelium . This adaptive
response to chronic acid exposure increases the risk of esophageal adenocarcinoma .
Question 7
What is the primary function of the sodium-potassium pump (Na⁺/K⁺ ATPase) in maintaining
cellular homeostasis?
A. Maintain resting membrane potential
B. Produce ATP
C. Synthesize proteins
D. Transport glucose into cells
A. Maintain resting membrane potential
RATIONALE: The sodium-potassium pump moves 3 Na⁺ ions out and 2 K⁺ ions into the cell,
creating an electrochemical gradient essential for maintaining membrane potential .
ADVANCED PATHOPHYSIOLOGY
QUESTIONS WITH DETAILED
RATIONALES FOR EXAM SUCCESS
(2026/2027 UPDATE)
EXAM OVERVIEW
This comprehensive review guide is designed to prepare students for the NSG5140 Week 5
Midterm Examination in Advanced Pathophysiology. The exam covers core concepts in
cellular adaptation, injury, inflammation, immunity, and neoplasia, as outlined in standard
advanced pathophysiology curricula . This guide provides 100 practice questions with verified
answers and detailed rationales to reinforce critical thinking and support exam success.
SECTION 1: CELLULAR ADAPTATION AND INJURY (Questions 1-25)
Question 1
A patient with chronic hypertension develops left ventricular wall thickening. This represents
which type of cellular adaptation?
A. Increased myocyte number due to cell division
B. Increased myocyte size due to increased workload
C. Replacement of cardiac cells with fibrous tissue
D. Transformation of cardiac cells into smooth muscle
B. Increased myocyte size due to increased workload
RATIONALE: Cardiac myocytes are terminally differentiated and respond to increased
workload by hypertrophy (increased cell size), not hyperplasia . The increased workload from
chronic hypertension causes the myocytes to enlarge, resulting in left ventricular wall
thickening .
Question 2
During ischemic injury, failure of the Na⁺/K⁺ ATPase pump leads to:
,A. Cellular dehydration and shrinkage
B. Intracellular sodium accumulation and cellular swelling
C. Increased ATP production
D. Enhanced protein synthesis
B. Intracellular sodium accumulation and cellular swelling
RATIONALE: ATP depletion causes failure of the Na⁺/K⁺ ATPase pump, leading to
intracellular sodium accumulation, water influx, and cellular swelling . This is the hallmark of
hypoxic cellular injury .
Question 3
Which cellular organelle is primarily responsible for ATP production through oxidative
phosphorylation?
A. Ribosome
B. Golgi apparatus
C. Mitochondria
D. Endoplasmic reticulum
C. Mitochondria
RATIONALE: Mitochondria are the primary site of ATP production through oxidative
phosphorylation . They contain the electron transport chain and ATP synthase, which generate
ATP from ADP and inorganic phosphate .
Question 4
Which of the following is a hallmark of reversible cellular injury?
A. Nuclear pyknosis
B. Failure of ion pumps leading to cell swelling
C. Membrane rupture
D. Lysosomal enzyme release
B. Failure of ion pumps leading to cell swelling
RATIONALE: Reversible injury involves cellular swelling due to ion pump failure . If the
insult is removed, the cell can recover . Irreversible injury involves membrane damage and
nuclear changes such as pyknosis .
Question 5
, Which of the following cellular changes is characterized by an increase in the number of
cells in an organ or tissue?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Atrophy
B. Hyperplasia
RATIONALE: Hyperplasia is an increase in the number of cells in an organ or tissue . It can be
physiologic (e.g., endometrial hyperplasia during the menstrual cycle) or pathologic (e.g., benign
prostatic hyperplasia) . Hypertrophy is an increase in cell size .
Question 6
A patient with Barrett's esophagus has developed which type of cellular adaptation?
A. Metaplasia
B. Hypertrophy
C. Hyperplasia
D. Atrophy
A. Metaplasia
RATIONALE: Barrett's esophagus is a classic example of metaplasia, where the normal
squamous epithelium of the esophagus is replaced by columnar epithelium . This adaptive
response to chronic acid exposure increases the risk of esophageal adenocarcinoma .
Question 7
What is the primary function of the sodium-potassium pump (Na⁺/K⁺ ATPase) in maintaining
cellular homeostasis?
A. Maintain resting membrane potential
B. Produce ATP
C. Synthesize proteins
D. Transport glucose into cells
A. Maintain resting membrane potential
RATIONALE: The sodium-potassium pump moves 3 Na⁺ ions out and 2 K⁺ ions into the cell,
creating an electrochemical gradient essential for maintaining membrane potential .
