1
PORTAGE LEARNING NURS 231 PATHOPHYSIOLOGY FINAL
EXAM 2026/2027 | Cumulative Final Assessment | Latest
Update | Verified Answers | Pass Guaranteed - A+ Graded
Section 1: Cellular Function, Genetics & Neoplasia (Q1-15)
Q1. Which cell injury mechanism involves the generation of reactive oxygen species
that damage lipid membranes, proteins, and DNA through unpaired electron
reactions? A. Hypoxic injury B. Free radical injury C. Chemical injury D. Infectious
injury
B. Free radical injury [CORRECT]
Rationale: Free radicals are highly reactive molecules with unpaired electrons that
initiate chain reactions causing membrane lipid peroxidation, protein fragmentation,
and DNA breaks. Hypoxic injury involves ATP depletion, chemical injury involves
direct toxin-receptor interactions, and infectious injury involves pathogen-mediated
cellular damage.
Correct Answer: B
Q2. A patient with coronary artery disease undergoes thrombolytic therapy for acute
myocardial infarction. Reperfusion of the ischemic myocardium results in additional
cellular damage mediated by calcium overload and reactive oxygen species. This
phenomenon is best described as: A. Apoptosis B. Reperfusion injury C. Coagulative
necrosis D. Metaplasia
B. Reperfusion injury [CORRECT]
Rationale: Reperfusion injury occurs when blood flow is restored to ischemic tissue,
generating oxygen-derived free radicals and causing calcium influx that exacerbates
cellular damage beyond the initial ischemic insult. Apoptosis is programmed cell
death, coagulative necrosis is the pattern of ischemic cell death, and metaplasia is a
reversible adaptive change.
Correct Answer: B
Q3. Which type of necrosis is characterized by the preservation of cellular and tissue
architecture and is most commonly associated with ischemia in solid organs such as
,2
the heart, kidney, and spleen? A. Liquefactive necrosis B. Caseous necrosis C.
Coagulative necrosis D. Fat necrosis
C. Coagulative necrosis [CORRECT]
Rationale: Coagulative necrosis results from ischemia that denatures structural
proteins and enzymes, preserving tissue architecture temporarily. Liquefactive
necrosis occurs in the brain and with suppurative infections, caseous necrosis is seen
in tuberculosis, and fat necrosis occurs in acute pancreatitis and breast tissue.
Correct Answer: C
Q4. Liquefactive necrosis is most characteristically associated with which of the
following pathological processes? A. Myocardial infarction B. Cerebral infarction and
abscess formation C. Tuberculous granulomas D. Traumatic fat injury
B. Cerebral infarction and abscess formation [CORRECT]
Rationale: Liquefactive necrosis occurs when enzymatic digestion of dead cells
produces a viscous liquid, characteristic of brain infarcts (due to high lipid content
and lack of structural collagen) and bacterial abscesses. Myocardial infarction causes
coagulative necrosis, tuberculosis causes caseous necrosis, and traumatic fat injury
causes fat necrosis.
Correct Answer: B
Q5. Metaplasia is defined as which of the following reversible cellular adaptations? A.
An increase in cell number within a tissue B. A change from one differentiated cell
type to another differentiated cell type C. An increase in individual cell size D. A
decrease in cell size and number due to reduced workload
B. A change from one differentiated cell type to another differentiated cell type
[CORRECT]
Rationale: Metaplasia is a reversible adaptive change where one mature
differentiated cell type is replaced by another mature differentiated cell type, often in
response to chronic irritation. Hyperplasia is increased cell number, hypertrophy is
increased cell size, and atrophy is decreased cell size and number.
Correct Answer: B
,3
Q6. A bodybuilder's skeletal muscle enlargement in response to progressive
resistance training is an example of: A. Hyperplasia B. Hypertrophy C. Atrophy D.
Dysplasia
B. Hypertrophy [CORRECT]
Rationale: Hypertrophy is the increase in cell size resulting in enlarged tissue mass,
commonly seen in skeletal muscle with exercise and cardiac muscle with increased
workload. Hyperplasia involves increased cell number, atrophy is decreased size, and
dysplasia is disordered preneoplastic growth.
Correct Answer: B
Q7. A 45-year-old woman with cervical dysplasia on Pap smear is counseled that her
condition may progress to carcinoma if untreated. The key distinguishing feature of
dysplasia compared to other cellular adaptations is: A. It is always completely
reversible with removal of the stimulus B. It represents disordered, dysfunctional
epithelial growth with nuclear atypia and loss of polarity C. It involves an increase in
cell size due to increased functional demand D. It is a physiologic change from one
mature cell type to another
B. It represents disordered, dysfunctional epithelial growth with nuclear atypia and
loss of polarity [CORRECT]
Rationale: Dysplasia is characterized by disordered, dysfunctional cell growth with
nuclear hyperchromasia, pleomorphism, and loss of normal tissue architecture,
representing a preneoplastic change that may be reversible in early stages but can
progress to carcinoma. Metaplasia is the change between mature cell types,
hypertrophy is increased cell size, and hyperplasia is increased cell number.
Correct Answer: B
Q8. The defining feature that distinguishes malignant neoplasms from benign
neoplasms is: A. Rapid rate of cell proliferation B. Invasion of surrounding tissues and
metastasis to distant sites C. Presence of a well-defined fibrous capsule D. Well-
differentiated cellular appearance resembling the tissue of origin
B. Invasion of surrounding tissues and metastasis to distant sites [CORRECT]
, 4
Rationale: Malignancy is defined by the biological behaviors of local tissue invasion
and distant metastasis. Benign tumors may grow rapidly, can be encapsulated, and
are well-differentiated, but they do not invade or metastasize.
Correct Answer: B
Q9. Anaplasia refers to which of the following histopathological features in malignant
neoplasms? A. Well-organized tissue architecture resembling normal tissue B.
Marked cellular pleomorphism, hyperchromatism, and loss of differentiation C.
Increased cell size with enlarged nuclei maintaining normal function D. Replacement
of one mature cell type by another mature cell type
B. Marked cellular pleomorphism, hyperchromatism, and loss of differentiation
[CORRECT]
Rationale: Anaplasia describes the loss of structural and functional differentiation in
malignant cells, characterized by marked nuclear pleomorphism, hyperchromatism,
high nuclear-to-cytoplasmic ratio, and bizarre mitoses. Differentiation refers to
resemblance to parent tissue, hypertrophy is increased cell size, and metaplasia is cell
type replacement.
Correct Answer: B
Q10. Which metastatic pathway involves the spread of malignant cells through blood
vessels and is the preferred route for sarcomas? A. Lymphatic spread B. Seeding of
body cavities C. Hematogenous spread D. Direct extension into adjacent tissues
C. Hematogenous spread [CORRECT]
Rationale: Hematogenous spread occurs when tumor cells invade blood vessels and
disseminate through the bloodstream, with sarcomas preferentially using this route
due to the vascular nature of mesenchymal tissue. Carcinomas more commonly
spread via lymphatics, seeding occurs in serosal surfaces, and direct extension is local
invasion.
Correct Answer: C
Q11. The p53 tumor suppressor gene normally functions to perform which of the
following cellular activities? A. Promote cell cycle progression through the G2/M
checkpoint B. Initiate DNA replication in response to growth signals C. Arrest the cell
PORTAGE LEARNING NURS 231 PATHOPHYSIOLOGY FINAL
EXAM 2026/2027 | Cumulative Final Assessment | Latest
Update | Verified Answers | Pass Guaranteed - A+ Graded
Section 1: Cellular Function, Genetics & Neoplasia (Q1-15)
Q1. Which cell injury mechanism involves the generation of reactive oxygen species
that damage lipid membranes, proteins, and DNA through unpaired electron
reactions? A. Hypoxic injury B. Free radical injury C. Chemical injury D. Infectious
injury
B. Free radical injury [CORRECT]
Rationale: Free radicals are highly reactive molecules with unpaired electrons that
initiate chain reactions causing membrane lipid peroxidation, protein fragmentation,
and DNA breaks. Hypoxic injury involves ATP depletion, chemical injury involves
direct toxin-receptor interactions, and infectious injury involves pathogen-mediated
cellular damage.
Correct Answer: B
Q2. A patient with coronary artery disease undergoes thrombolytic therapy for acute
myocardial infarction. Reperfusion of the ischemic myocardium results in additional
cellular damage mediated by calcium overload and reactive oxygen species. This
phenomenon is best described as: A. Apoptosis B. Reperfusion injury C. Coagulative
necrosis D. Metaplasia
B. Reperfusion injury [CORRECT]
Rationale: Reperfusion injury occurs when blood flow is restored to ischemic tissue,
generating oxygen-derived free radicals and causing calcium influx that exacerbates
cellular damage beyond the initial ischemic insult. Apoptosis is programmed cell
death, coagulative necrosis is the pattern of ischemic cell death, and metaplasia is a
reversible adaptive change.
Correct Answer: B
Q3. Which type of necrosis is characterized by the preservation of cellular and tissue
architecture and is most commonly associated with ischemia in solid organs such as
,2
the heart, kidney, and spleen? A. Liquefactive necrosis B. Caseous necrosis C.
Coagulative necrosis D. Fat necrosis
C. Coagulative necrosis [CORRECT]
Rationale: Coagulative necrosis results from ischemia that denatures structural
proteins and enzymes, preserving tissue architecture temporarily. Liquefactive
necrosis occurs in the brain and with suppurative infections, caseous necrosis is seen
in tuberculosis, and fat necrosis occurs in acute pancreatitis and breast tissue.
Correct Answer: C
Q4. Liquefactive necrosis is most characteristically associated with which of the
following pathological processes? A. Myocardial infarction B. Cerebral infarction and
abscess formation C. Tuberculous granulomas D. Traumatic fat injury
B. Cerebral infarction and abscess formation [CORRECT]
Rationale: Liquefactive necrosis occurs when enzymatic digestion of dead cells
produces a viscous liquid, characteristic of brain infarcts (due to high lipid content
and lack of structural collagen) and bacterial abscesses. Myocardial infarction causes
coagulative necrosis, tuberculosis causes caseous necrosis, and traumatic fat injury
causes fat necrosis.
Correct Answer: B
Q5. Metaplasia is defined as which of the following reversible cellular adaptations? A.
An increase in cell number within a tissue B. A change from one differentiated cell
type to another differentiated cell type C. An increase in individual cell size D. A
decrease in cell size and number due to reduced workload
B. A change from one differentiated cell type to another differentiated cell type
[CORRECT]
Rationale: Metaplasia is a reversible adaptive change where one mature
differentiated cell type is replaced by another mature differentiated cell type, often in
response to chronic irritation. Hyperplasia is increased cell number, hypertrophy is
increased cell size, and atrophy is decreased cell size and number.
Correct Answer: B
,3
Q6. A bodybuilder's skeletal muscle enlargement in response to progressive
resistance training is an example of: A. Hyperplasia B. Hypertrophy C. Atrophy D.
Dysplasia
B. Hypertrophy [CORRECT]
Rationale: Hypertrophy is the increase in cell size resulting in enlarged tissue mass,
commonly seen in skeletal muscle with exercise and cardiac muscle with increased
workload. Hyperplasia involves increased cell number, atrophy is decreased size, and
dysplasia is disordered preneoplastic growth.
Correct Answer: B
Q7. A 45-year-old woman with cervical dysplasia on Pap smear is counseled that her
condition may progress to carcinoma if untreated. The key distinguishing feature of
dysplasia compared to other cellular adaptations is: A. It is always completely
reversible with removal of the stimulus B. It represents disordered, dysfunctional
epithelial growth with nuclear atypia and loss of polarity C. It involves an increase in
cell size due to increased functional demand D. It is a physiologic change from one
mature cell type to another
B. It represents disordered, dysfunctional epithelial growth with nuclear atypia and
loss of polarity [CORRECT]
Rationale: Dysplasia is characterized by disordered, dysfunctional cell growth with
nuclear hyperchromasia, pleomorphism, and loss of normal tissue architecture,
representing a preneoplastic change that may be reversible in early stages but can
progress to carcinoma. Metaplasia is the change between mature cell types,
hypertrophy is increased cell size, and hyperplasia is increased cell number.
Correct Answer: B
Q8. The defining feature that distinguishes malignant neoplasms from benign
neoplasms is: A. Rapid rate of cell proliferation B. Invasion of surrounding tissues and
metastasis to distant sites C. Presence of a well-defined fibrous capsule D. Well-
differentiated cellular appearance resembling the tissue of origin
B. Invasion of surrounding tissues and metastasis to distant sites [CORRECT]
, 4
Rationale: Malignancy is defined by the biological behaviors of local tissue invasion
and distant metastasis. Benign tumors may grow rapidly, can be encapsulated, and
are well-differentiated, but they do not invade or metastasize.
Correct Answer: B
Q9. Anaplasia refers to which of the following histopathological features in malignant
neoplasms? A. Well-organized tissue architecture resembling normal tissue B.
Marked cellular pleomorphism, hyperchromatism, and loss of differentiation C.
Increased cell size with enlarged nuclei maintaining normal function D. Replacement
of one mature cell type by another mature cell type
B. Marked cellular pleomorphism, hyperchromatism, and loss of differentiation
[CORRECT]
Rationale: Anaplasia describes the loss of structural and functional differentiation in
malignant cells, characterized by marked nuclear pleomorphism, hyperchromatism,
high nuclear-to-cytoplasmic ratio, and bizarre mitoses. Differentiation refers to
resemblance to parent tissue, hypertrophy is increased cell size, and metaplasia is cell
type replacement.
Correct Answer: B
Q10. Which metastatic pathway involves the spread of malignant cells through blood
vessels and is the preferred route for sarcomas? A. Lymphatic spread B. Seeding of
body cavities C. Hematogenous spread D. Direct extension into adjacent tissues
C. Hematogenous spread [CORRECT]
Rationale: Hematogenous spread occurs when tumor cells invade blood vessels and
disseminate through the bloodstream, with sarcomas preferentially using this route
due to the vascular nature of mesenchymal tissue. Carcinomas more commonly
spread via lymphatics, seeding occurs in serosal surfaces, and direct extension is local
invasion.
Correct Answer: C
Q11. The p53 tumor suppressor gene normally functions to perform which of the
following cellular activities? A. Promote cell cycle progression through the G2/M
checkpoint B. Initiate DNA replication in response to growth signals C. Arrest the cell
