CHAMBERLAIN UNIVERSITY NR 507 ADVANCED
PATHOPHYSIOLOGY – EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS RATIONALE | 2027
Q&A | INSTANT DOWNLOAD PDF
1. A patient develops cellular enlargement in response to chronic increased
workload without an increase in cell number. Which adaptation has occurred?
A. Atrophy
B. Hyperplasia
C. Hypertrophy
D. Metaplasia
Rationale: Hypertrophy is an increase in individual cell size, commonly occurring when tissues
such as cardiac or skeletal muscle experience increased workload. Hyperplasia involves an
increase in cell number, while atrophy represents decreased cell size or tissue mass.
2. A tissue changes from one mature cell type to another mature cell type after
prolonged irritation. This reversible adaptation is known as:
A. Dysplasia
B. Metaplasia
C. Anaplasia
D. Necrosis
Rationale: Metaplasia is a reversible substitution of one differentiated cell type for another that
is better able to tolerate a persistent stressor. Dysplasia involves abnormal cellular growth and
organization and can be associated with malignancy.
3. Which finding most directly indicates irreversible cellular injury?
A. Cellular swelling
B. Fatty change
C. Reduced protein synthesis
D. Failure of mitochondrial function with inability to restore ATP production
,Rationale: Persistent mitochondrial dysfunction and inability to restore ATP production indicate
severe, irreversible cellular injury. Early changes such as swelling and reduced protein synthesis
may still be reversible if the underlying insult is removed.
4. During ischemic injury, depletion of ATP most directly disrupts which cellular
process?
A. DNA replication
B. The sodium-potassium pump
C. Collagen synthesis
D. Lysosomal enzyme production
Rationale: ATP depletion impairs the sodium-potassium ATPase, causing intracellular sodium
and water accumulation and resulting in cellular swelling. This is an early consequence of
energy failure during ischemia.
5. A biopsy demonstrates cell death characterized by preservation of the basic
tissue architecture for several days. Which type of necrosis is most consistent
with this finding?
A. Liquefactive necrosis
B. Fat necrosis
C. Coagulative necrosis
D. Caseous necrosis
Rationale: Coagulative necrosis typically preserves the tissue architecture despite cellular death
and is characteristic of ischemic injury in solid organs such as the heart and kidney.
6. Which feature distinguishes apoptosis from necrosis?
A. Extensive surrounding inflammation
B. Loss of membrane integrity early in the process
C. Programmed cell death involving controlled cellular fragmentation
D. Significant cellular swelling
,Rationale: Apoptosis is a regulated form of cell death in which cells shrink and fragment into
apoptotic bodies, generally without provoking substantial inflammation. Necrosis commonly
involves swelling, membrane disruption, and inflammation.
7. A patient with severe hypoxemia develops cellular injury because oxygen
delivery to tissues is inadequate. Which process is primarily responsible for the
initial decrease in aerobic ATP production?
A. Increased glycolysis
B. Increased protein synthesis
C. Disruption of oxidative phosphorylation
D. Activation of DNA transcription
Rationale: Oxygen is required for oxidative phosphorylation in mitochondria. When oxygen
delivery falls substantially, oxidative ATP production decreases, forcing cells to rely more
heavily on anaerobic glycolysis.
8. A patient experiences tissue injury followed by increased production of reactive
oxygen species during restoration of blood flow. This phenomenon is called:
A. Cellular adaptation
B. Osmotic injury
C. Ischemia-reperfusion injury
D. Contact inhibition
Rationale: Ischemia-reperfusion injury occurs when restoration of oxygenated blood generates
reactive oxygen species and inflammatory responses that can further damage previously
ischemic tissue.
9. Which inflammatory mediator is strongly associated with vasodilation and
increased vascular permeability during acute inflammation?
A. Albumin
B. Histamine
C. Hemoglobin
D. Insulin
, Rationale: Histamine released primarily from mast cells promotes vasodilation and increases
vascular permeability, contributing to redness, warmth, and tissue edema during acute
inflammation.
10. A patient develops localized redness, warmth, swelling, and pain after tissue
injury. Which mechanism most directly explains the swelling?
A. Reduced blood flow to the area
B. Decreased endothelial permeability
C. Movement of protein-rich fluid into the interstitial space
D. Increased lymphatic drainage
Rationale: Acute inflammation increases vascular permeability, allowing plasma proteins and
fluid to move into the interstitial space. The resulting edema contributes to swelling and can
increase local pressure and pain.
11. Which leukocyte is typically the predominant early cellular participant in acute
bacterial inflammation?
A. Eosinophil
B. Lymphocyte
C. Monocyte
D. Neutrophil
Rationale: Neutrophils are generally the first major leukocytes recruited during acute bacterial
inflammation. Monocytes and macrophages become increasingly important later in the
inflammatory response.
12. A patient has prolonged inflammation characterized by macrophage activation,
lymphocyte infiltration, and tissue destruction. This pattern is most consistent
with:
A. Immediate hypersensitivity
B. Chronic inflammation
C. Hemostasis
D. Acute passive congestion
PATHOPHYSIOLOGY – EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS RATIONALE | 2027
Q&A | INSTANT DOWNLOAD PDF
1. A patient develops cellular enlargement in response to chronic increased
workload without an increase in cell number. Which adaptation has occurred?
A. Atrophy
B. Hyperplasia
C. Hypertrophy
D. Metaplasia
Rationale: Hypertrophy is an increase in individual cell size, commonly occurring when tissues
such as cardiac or skeletal muscle experience increased workload. Hyperplasia involves an
increase in cell number, while atrophy represents decreased cell size or tissue mass.
2. A tissue changes from one mature cell type to another mature cell type after
prolonged irritation. This reversible adaptation is known as:
A. Dysplasia
B. Metaplasia
C. Anaplasia
D. Necrosis
Rationale: Metaplasia is a reversible substitution of one differentiated cell type for another that
is better able to tolerate a persistent stressor. Dysplasia involves abnormal cellular growth and
organization and can be associated with malignancy.
3. Which finding most directly indicates irreversible cellular injury?
A. Cellular swelling
B. Fatty change
C. Reduced protein synthesis
D. Failure of mitochondrial function with inability to restore ATP production
,Rationale: Persistent mitochondrial dysfunction and inability to restore ATP production indicate
severe, irreversible cellular injury. Early changes such as swelling and reduced protein synthesis
may still be reversible if the underlying insult is removed.
4. During ischemic injury, depletion of ATP most directly disrupts which cellular
process?
A. DNA replication
B. The sodium-potassium pump
C. Collagen synthesis
D. Lysosomal enzyme production
Rationale: ATP depletion impairs the sodium-potassium ATPase, causing intracellular sodium
and water accumulation and resulting in cellular swelling. This is an early consequence of
energy failure during ischemia.
5. A biopsy demonstrates cell death characterized by preservation of the basic
tissue architecture for several days. Which type of necrosis is most consistent
with this finding?
A. Liquefactive necrosis
B. Fat necrosis
C. Coagulative necrosis
D. Caseous necrosis
Rationale: Coagulative necrosis typically preserves the tissue architecture despite cellular death
and is characteristic of ischemic injury in solid organs such as the heart and kidney.
6. Which feature distinguishes apoptosis from necrosis?
A. Extensive surrounding inflammation
B. Loss of membrane integrity early in the process
C. Programmed cell death involving controlled cellular fragmentation
D. Significant cellular swelling
,Rationale: Apoptosis is a regulated form of cell death in which cells shrink and fragment into
apoptotic bodies, generally without provoking substantial inflammation. Necrosis commonly
involves swelling, membrane disruption, and inflammation.
7. A patient with severe hypoxemia develops cellular injury because oxygen
delivery to tissues is inadequate. Which process is primarily responsible for the
initial decrease in aerobic ATP production?
A. Increased glycolysis
B. Increased protein synthesis
C. Disruption of oxidative phosphorylation
D. Activation of DNA transcription
Rationale: Oxygen is required for oxidative phosphorylation in mitochondria. When oxygen
delivery falls substantially, oxidative ATP production decreases, forcing cells to rely more
heavily on anaerobic glycolysis.
8. A patient experiences tissue injury followed by increased production of reactive
oxygen species during restoration of blood flow. This phenomenon is called:
A. Cellular adaptation
B. Osmotic injury
C. Ischemia-reperfusion injury
D. Contact inhibition
Rationale: Ischemia-reperfusion injury occurs when restoration of oxygenated blood generates
reactive oxygen species and inflammatory responses that can further damage previously
ischemic tissue.
9. Which inflammatory mediator is strongly associated with vasodilation and
increased vascular permeability during acute inflammation?
A. Albumin
B. Histamine
C. Hemoglobin
D. Insulin
, Rationale: Histamine released primarily from mast cells promotes vasodilation and increases
vascular permeability, contributing to redness, warmth, and tissue edema during acute
inflammation.
10. A patient develops localized redness, warmth, swelling, and pain after tissue
injury. Which mechanism most directly explains the swelling?
A. Reduced blood flow to the area
B. Decreased endothelial permeability
C. Movement of protein-rich fluid into the interstitial space
D. Increased lymphatic drainage
Rationale: Acute inflammation increases vascular permeability, allowing plasma proteins and
fluid to move into the interstitial space. The resulting edema contributes to swelling and can
increase local pressure and pain.
11. Which leukocyte is typically the predominant early cellular participant in acute
bacterial inflammation?
A. Eosinophil
B. Lymphocyte
C. Monocyte
D. Neutrophil
Rationale: Neutrophils are generally the first major leukocytes recruited during acute bacterial
inflammation. Monocytes and macrophages become increasingly important later in the
inflammatory response.
12. A patient has prolonged inflammation characterized by macrophage activation,
lymphocyte infiltration, and tissue destruction. This pattern is most consistent
with:
A. Immediate hypersensitivity
B. Chronic inflammation
C. Hemostasis
D. Acute passive congestion
