TWU BIOL 5333: Advanced Pathophysiology Quiz Compendium
BIOL 5333 Advanced Pathophysiology Texas
Woman's University (TWU)
Quiz 1 to Quiz 10 with 10 questions each Prep Modules 1-10 (100 High-Yield Questions &
Rationales)
Quiz 1: Cellular Adaptation, Injury, and Death
Q1. A 56-year-old male with a 20-year history of uncontrolled hypertension exhibits concentric left
ventricular enlargement. Which cellular adaptation is occurring?
✔ Correct Answer: Hypertrophy
Rationale: Rationale: Hypertrophy is an increase in individual cell size driven by mechanical hemodynamic stress
or load, typical in myocardial tissue which cannot divide.
Q2. A 45-year-old chronic smoker undergo a bronchoscopy. Biopsy reveals stratified squamous
epithelium replacing ciliated columnar epithelium. This is an example of:
✔ Correct Answer: Metaplasia
Rationale: Rationale: Metaplasia is the reversible replacement of one mature cell type by another, adaptive to
chronic irritation such as cigarette smoke.
Q3. During hypoxic cell injury, what primary mechanism directly triggers acute cellular swelling?
✔ Correct Answer: Failure of the Na+/K+ ATPase pump due to decreased ATP production
Rationale: Rationale: Hypoxia causes ATP depletion, shutting down active transport systems. Sodium floods the
cell, dragging water with it internally.
Q4. Which form of cellular death involves programmed activation of caspases without causing a
surrounding inflammatory response?
✔ Correct Answer: Apoptosis
Rationale: Rationale: Apoptosis is clean, programmed cell suicide involving intact membranes and cellular
fragmentation without inflammatory cellular spill.
Q5. Autopsy of a patient with a history of recurrent pulmonary tuberculosis reveals a cheese-like,
soft, friable area in the lung parenchyma. What type of necrosis is this?
✔ Correct Answer: Caseous necrosis
Rationale: Rationale: Caseous necrosis combines elements of coagulative and liquefactive necrosis, uniquely
characteristic of tuberculous granulomas.
Q6. Which intracellular ion accumulates significantly in the cytosol during ischemic cell injury,
activating destructive enzymes like phospholipases and endonucleases?
✔ Correct Answer: Calcium (Ca2+)
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, TWU BIOL 5333: Advanced Pathophysiology Quiz Compendium
Rationale: Rationale: Lack of ATP inhibits active calcium efflux and sequestration, leading to cytoplastic calcium
overload that triggers enzymatic autodigestion.
Q7. A biopsy of the uterine endometrium in a woman with abnormal postmenopausal bleeding
shows an abnormal increase in cell count with structural architectural changes. This represents:
✔ Correct Answer: Atypical Hyperplasia (Dysplasia)
Rationale: Rationale: Dysplasia represents disordered cell growth and maturation, often acting as a pre-
neoplastic precursor.
Q8. Reperfusion injury following tissue ischemia is primarily mediated by the generation of which
destructive molecules?
✔ Correct Answer: Reactive Oxygen Species (ROS) / Free Radicals
Rationale: Rationale: Reoxygenation allows restored blood flow to deliver excess molecular oxygen, producing
toxic free radicals that damage damaged lipids and DNA.
Q9. What type of necrosis is most uniquely expected following ischemic injury or infarction to
brain tissue?
✔ Correct Answer: Liquefactive necrosis
Rationale: Rationale: The brain is rich in lipids and hydrolytic enzymes; microbial or ischemic cell destruction
leads to rapid liquid transformation.
Q10. Accumulation of which brown-yellow intracellular pigment represents a marker of past free-
radical lipid peroxidation and 'wear-and-tear' cellular aging?
✔ Correct Answer: Lipofuscin
Rationale: Rationale: Lipofuscin consists of oxidized lipid-protein residues that build up over time within
lysosomes of long-lived nondividing cells.
Quiz 2: Fluid, Electrolyte, and Acid-Base Balance
Q1. A patient presents with a serum sodium level of 118 mEq/L. Which pathophysiological shift
represents the primary neurological risk?
✔ Correct Answer: Intracellular water movement causing cerebral edema
Rationale: Rationale: Severe extracellular hyponatremia makes the extracellular space hypotonic, forcing water
into brain cells via osmosis, increasing intracranial pressure.
Q2. An arterial blood gas (ABG) shows: pH 7.22, PaCO2 58 mmHg, and HCO3- 24 mEq/L. What is
the acid-base diagnosis?
✔ Correct Answer: Uncompensated Respiratory Acidosis
Rationale: Rationale: A low pH indicates acidosis; a elevated PaCO2 confirms a respiratory origin. Normal
HCO3shows no metabolic compensation yet.
Page 2 of 15
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BIOL 5333 Advanced Pathophysiology Texas
Woman's University (TWU)
Quiz 1 to Quiz 10 with 10 questions each Prep Modules 1-10 (100 High-Yield Questions &
Rationales)
Quiz 1: Cellular Adaptation, Injury, and Death
Q1. A 56-year-old male with a 20-year history of uncontrolled hypertension exhibits concentric left
ventricular enlargement. Which cellular adaptation is occurring?
✔ Correct Answer: Hypertrophy
Rationale: Rationale: Hypertrophy is an increase in individual cell size driven by mechanical hemodynamic stress
or load, typical in myocardial tissue which cannot divide.
Q2. A 45-year-old chronic smoker undergo a bronchoscopy. Biopsy reveals stratified squamous
epithelium replacing ciliated columnar epithelium. This is an example of:
✔ Correct Answer: Metaplasia
Rationale: Rationale: Metaplasia is the reversible replacement of one mature cell type by another, adaptive to
chronic irritation such as cigarette smoke.
Q3. During hypoxic cell injury, what primary mechanism directly triggers acute cellular swelling?
✔ Correct Answer: Failure of the Na+/K+ ATPase pump due to decreased ATP production
Rationale: Rationale: Hypoxia causes ATP depletion, shutting down active transport systems. Sodium floods the
cell, dragging water with it internally.
Q4. Which form of cellular death involves programmed activation of caspases without causing a
surrounding inflammatory response?
✔ Correct Answer: Apoptosis
Rationale: Rationale: Apoptosis is clean, programmed cell suicide involving intact membranes and cellular
fragmentation without inflammatory cellular spill.
Q5. Autopsy of a patient with a history of recurrent pulmonary tuberculosis reveals a cheese-like,
soft, friable area in the lung parenchyma. What type of necrosis is this?
✔ Correct Answer: Caseous necrosis
Rationale: Rationale: Caseous necrosis combines elements of coagulative and liquefactive necrosis, uniquely
characteristic of tuberculous granulomas.
Q6. Which intracellular ion accumulates significantly in the cytosol during ischemic cell injury,
activating destructive enzymes like phospholipases and endonucleases?
✔ Correct Answer: Calcium (Ca2+)
Page 1 of 15
.
, TWU BIOL 5333: Advanced Pathophysiology Quiz Compendium
Rationale: Rationale: Lack of ATP inhibits active calcium efflux and sequestration, leading to cytoplastic calcium
overload that triggers enzymatic autodigestion.
Q7. A biopsy of the uterine endometrium in a woman with abnormal postmenopausal bleeding
shows an abnormal increase in cell count with structural architectural changes. This represents:
✔ Correct Answer: Atypical Hyperplasia (Dysplasia)
Rationale: Rationale: Dysplasia represents disordered cell growth and maturation, often acting as a pre-
neoplastic precursor.
Q8. Reperfusion injury following tissue ischemia is primarily mediated by the generation of which
destructive molecules?
✔ Correct Answer: Reactive Oxygen Species (ROS) / Free Radicals
Rationale: Rationale: Reoxygenation allows restored blood flow to deliver excess molecular oxygen, producing
toxic free radicals that damage damaged lipids and DNA.
Q9. What type of necrosis is most uniquely expected following ischemic injury or infarction to
brain tissue?
✔ Correct Answer: Liquefactive necrosis
Rationale: Rationale: The brain is rich in lipids and hydrolytic enzymes; microbial or ischemic cell destruction
leads to rapid liquid transformation.
Q10. Accumulation of which brown-yellow intracellular pigment represents a marker of past free-
radical lipid peroxidation and 'wear-and-tear' cellular aging?
✔ Correct Answer: Lipofuscin
Rationale: Rationale: Lipofuscin consists of oxidized lipid-protein residues that build up over time within
lysosomes of long-lived nondividing cells.
Quiz 2: Fluid, Electrolyte, and Acid-Base Balance
Q1. A patient presents with a serum sodium level of 118 mEq/L. Which pathophysiological shift
represents the primary neurological risk?
✔ Correct Answer: Intracellular water movement causing cerebral edema
Rationale: Rationale: Severe extracellular hyponatremia makes the extracellular space hypotonic, forcing water
into brain cells via osmosis, increasing intracranial pressure.
Q2. An arterial blood gas (ABG) shows: pH 7.22, PaCO2 58 mmHg, and HCO3- 24 mEq/L. What is
the acid-base diagnosis?
✔ Correct Answer: Uncompensated Respiratory Acidosis
Rationale: Rationale: A low pH indicates acidosis; a elevated PaCO2 confirms a respiratory origin. Normal
HCO3shows no metabolic compensation yet.
Page 2 of 15
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