N212 PATHOPHYSIOLOGY EXAM 1 STUDY GUIDE
2026 | Eastwick College | 100% Correct Certification |
Updated | Pass Guaranteed - A+ Graded
Section 1: Cellular Adaptation, Injury & Death (Q1-15)
Q1. A 78-year-old male with end-stage COPD has been bedridden for 6 months.
Upon physical examination, the nurse notes decreased muscle mass in the lower
extremities. Which cellular adaptation best explains this finding?
A. Hypertrophy
B. Hyperplasia
C. Atrophy
D. Metaplasia
Correct Answer: C. Atrophy [CORRECT]
Rationale: Atrophy is a decrease in cell size and number due to decreased workload
or disuse, as seen in immobilized patients. Hypertrophy involves increased cell size,
hyperplasia involves increased cell number, and metaplasia involves reversible
change from one differentiated cell type to another—none of which apply here.
Q2. A 45-year-old weightlifter demonstrates significant enlargement of the biceps
brachii muscle. The nurse understands this represents which type of cellular
adaptation?
A. Hyperplasia
B. Hypertrophy
C. Metaplasia
D. Dysplasia
,Correct Answer: B. Hypertrophy [CORRECT]
Rationale: Hypertrophy is an increase in cell size (not number) in response to
increased workload, such as skeletal muscle enlargement from resistance training.
Hyperplasia involves increased cell number, metaplasia is a change in cell type, and
dysplasia is abnormal cell development.
Q3. A postmenopausal woman taking estrogen replacement therapy develops
endometrial thickening. The pathologist reports an increase in the number of
endometrial glandular cells. This is an example of:
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Apoptosis
Correct Answer: B. Hyperplasia [CORRECT]
Rationale: Hyperplasia is an increase in the number of cells in a tissue or organ,
commonly seen in estrogen-stimulated endometrial proliferation. Hypertrophy
involves cell enlargement, metaplasia involves cell type change, and apoptosis is
programmed cell death.
Q4. A patient with chronic gastroesophageal reflux disease (GERD) undergoes
endoscopy. Biopsy reveals columnar epithelium replacing the normal squamous
epithelium in the distal esophagus. This cellular adaptation is termed:
A. Dysplasia
B. Hyperplasia
C. Metaplasia
D. Hypertrophy
Correct Answer: C. Metaplasia [CORRECT]
Rationale: Metaplasia is the reversible replacement of one differentiated cell type by
another, as seen in Barrett esophagus where chronic acid exposure causes
,squamous-to-columnar epithelial change. Dysplasia is disordered growth,
hyperplasia is increased cell number, and hypertrophy is increased cell size.
Q5. During a routine Pap smear, a 32-year-old woman is found to have cervical
cells showing loss of normal maturation, nuclear hyperchromasia, and increased
nuclear-to-cytoplasmic ratio. These findings are consistent with:
A. Metaplasia
B. Hyperplasia
C. Dysplasia
D. Hypertrophy
Correct Answer: C. Dysplasia [CORRECT]
Rationale: Dysplasia is characterized by disordered, defective cell development with
abnormal size, shape, and organization—often a precursor to malignancy. Metaplasia
is a reversible cell type change, hyperplasia is increased cell number, and
hypertrophy is increased cell size; none demonstrate the atypical cellular features
described.
Q6. A 62-year-old male with a history of myocardial infarction 3 days ago is found
to have pale, firm, wedge-shaped infarction in the left ventricle on autopsy.
Microscopically, the tissue shows preserved cell outlines with loss of nuclei. This
pattern of necrosis is classified as:
A. Liquefactive necrosis
B. Coagulative necrosis
C. Caseous necrosis
D. Fat necrosis
Correct Answer: B. Coagulative necrosis [CORRECT]
Rationale: Coagulative necrosis is characteristic of ischemic injury in most solid
organs (except brain), presenting as firm, pale tissue with preserved cellular outlines
but loss of nuclei due to protein denaturation. Liquefactive necrosis occurs in brain
, infarcts and abscesses, caseous necrosis is seen in tuberculosis, and fat necrosis
occurs in pancreatic disease or trauma.
Q7. A patient with bacterial meningitis develops a cerebral abscess. On imaging,
the lesion appears as a fluid-filled cavity with surrounding edema. The type of
necrosis most likely present in this abscess is:
A. Coagulative necrosis
B. Caseous necrosis
C. Liquefactive necrosis
D. Gangrenous necrosis
Correct Answer: C. Liquefactive necrosis [CORRECT]
Rationale: Liquefactive necrosis results from enzymatic digestion of dead cells,
producing a liquid viscous mass—characteristic of brain infarcts and abscesses due
to rich enzymatic content. Coagulative necrosis preserves tissue architecture, caseous
necrosis has a cheese-like appearance, and gangrenous necrosis refers to ischemic
necrosis of a limb.
Q8. A 35-year-old HIV-positive patient presents with fever, night sweats, and a
cavitary lung lesion. Sputum analysis reveals acid-fast bacilli. The granulomatous
lesion in the lung would most likely demonstrate which type of necrosis?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fat necrosis
Correct Answer: C. Caseous necrosis [CORRECT]
Rationale: Caseous necrosis is a distinctive form of coagulative necrosis seen in
granulomatous infections like tuberculosis, characterized by soft, cheese-like,
amorphous debris. Coagulative necrosis preserves architecture, liquefactive necrosis
produces fluid-filled cavities, and fat necrosis involves adipose tissue saponification.
2026 | Eastwick College | 100% Correct Certification |
Updated | Pass Guaranteed - A+ Graded
Section 1: Cellular Adaptation, Injury & Death (Q1-15)
Q1. A 78-year-old male with end-stage COPD has been bedridden for 6 months.
Upon physical examination, the nurse notes decreased muscle mass in the lower
extremities. Which cellular adaptation best explains this finding?
A. Hypertrophy
B. Hyperplasia
C. Atrophy
D. Metaplasia
Correct Answer: C. Atrophy [CORRECT]
Rationale: Atrophy is a decrease in cell size and number due to decreased workload
or disuse, as seen in immobilized patients. Hypertrophy involves increased cell size,
hyperplasia involves increased cell number, and metaplasia involves reversible
change from one differentiated cell type to another—none of which apply here.
Q2. A 45-year-old weightlifter demonstrates significant enlargement of the biceps
brachii muscle. The nurse understands this represents which type of cellular
adaptation?
A. Hyperplasia
B. Hypertrophy
C. Metaplasia
D. Dysplasia
,Correct Answer: B. Hypertrophy [CORRECT]
Rationale: Hypertrophy is an increase in cell size (not number) in response to
increased workload, such as skeletal muscle enlargement from resistance training.
Hyperplasia involves increased cell number, metaplasia is a change in cell type, and
dysplasia is abnormal cell development.
Q3. A postmenopausal woman taking estrogen replacement therapy develops
endometrial thickening. The pathologist reports an increase in the number of
endometrial glandular cells. This is an example of:
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Apoptosis
Correct Answer: B. Hyperplasia [CORRECT]
Rationale: Hyperplasia is an increase in the number of cells in a tissue or organ,
commonly seen in estrogen-stimulated endometrial proliferation. Hypertrophy
involves cell enlargement, metaplasia involves cell type change, and apoptosis is
programmed cell death.
Q4. A patient with chronic gastroesophageal reflux disease (GERD) undergoes
endoscopy. Biopsy reveals columnar epithelium replacing the normal squamous
epithelium in the distal esophagus. This cellular adaptation is termed:
A. Dysplasia
B. Hyperplasia
C. Metaplasia
D. Hypertrophy
Correct Answer: C. Metaplasia [CORRECT]
Rationale: Metaplasia is the reversible replacement of one differentiated cell type by
another, as seen in Barrett esophagus where chronic acid exposure causes
,squamous-to-columnar epithelial change. Dysplasia is disordered growth,
hyperplasia is increased cell number, and hypertrophy is increased cell size.
Q5. During a routine Pap smear, a 32-year-old woman is found to have cervical
cells showing loss of normal maturation, nuclear hyperchromasia, and increased
nuclear-to-cytoplasmic ratio. These findings are consistent with:
A. Metaplasia
B. Hyperplasia
C. Dysplasia
D. Hypertrophy
Correct Answer: C. Dysplasia [CORRECT]
Rationale: Dysplasia is characterized by disordered, defective cell development with
abnormal size, shape, and organization—often a precursor to malignancy. Metaplasia
is a reversible cell type change, hyperplasia is increased cell number, and
hypertrophy is increased cell size; none demonstrate the atypical cellular features
described.
Q6. A 62-year-old male with a history of myocardial infarction 3 days ago is found
to have pale, firm, wedge-shaped infarction in the left ventricle on autopsy.
Microscopically, the tissue shows preserved cell outlines with loss of nuclei. This
pattern of necrosis is classified as:
A. Liquefactive necrosis
B. Coagulative necrosis
C. Caseous necrosis
D. Fat necrosis
Correct Answer: B. Coagulative necrosis [CORRECT]
Rationale: Coagulative necrosis is characteristic of ischemic injury in most solid
organs (except brain), presenting as firm, pale tissue with preserved cellular outlines
but loss of nuclei due to protein denaturation. Liquefactive necrosis occurs in brain
, infarcts and abscesses, caseous necrosis is seen in tuberculosis, and fat necrosis
occurs in pancreatic disease or trauma.
Q7. A patient with bacterial meningitis develops a cerebral abscess. On imaging,
the lesion appears as a fluid-filled cavity with surrounding edema. The type of
necrosis most likely present in this abscess is:
A. Coagulative necrosis
B. Caseous necrosis
C. Liquefactive necrosis
D. Gangrenous necrosis
Correct Answer: C. Liquefactive necrosis [CORRECT]
Rationale: Liquefactive necrosis results from enzymatic digestion of dead cells,
producing a liquid viscous mass—characteristic of brain infarcts and abscesses due
to rich enzymatic content. Coagulative necrosis preserves tissue architecture, caseous
necrosis has a cheese-like appearance, and gangrenous necrosis refers to ischemic
necrosis of a limb.
Q8. A 35-year-old HIV-positive patient presents with fever, night sweats, and a
cavitary lung lesion. Sputum analysis reveals acid-fast bacilli. The granulomatous
lesion in the lung would most likely demonstrate which type of necrosis?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fat necrosis
Correct Answer: C. Caseous necrosis [CORRECT]
Rationale: Caseous necrosis is a distinctive form of coagulative necrosis seen in
granulomatous infections like tuberculosis, characterized by soft, cheese-like,
amorphous debris. Coagulative necrosis preserves architecture, liquefactive necrosis
produces fluid-filled cavities, and fat necrosis involves adipose tissue saponification.
