PATHOPHYSIOLOGY EXAM TEST BANK ULTIMATE
200+ QUESTION AND VERIFIED ANSWERS
CUMULATIVE TEST BANK
A tissue biopsy of a chronic smoker's bronchi reveals that normal ciliated
columnar epithelial cells have been replaced by stratified squamous epithelial
cells. Which cellular adaptation is this?
,A) Dysplasia
B) Metaplasia
C) Hyperplasia
D) Anaplasia
Correct Answer: B) Metaplasia
Rationale: Metaplasia is the reversible replacement of one mature cell type by
another mature cell type. This adaptive change helps the tissue survive harsh,
chronic irritation like cigarette smoke. However, it results in a loss of protective
ciliary function.
During hypoxic cell injury, what directly causes the cellular swelling and
organelle dilation observed under microscopy?
A) Increased intracellular calcium activating proteases
B) Influx of sodium and water due to ATP depletion
C) Lactic acid accumulation dissolving the plasma membrane
D) Release of lysosomal enzymes into the cytoplasm
Correct Answer: B) Influx of sodium and water due to ATP depletion
Rationale: Hypoxia shuts down mitochondrial oxidative phosphorylation, causing
ATP depletion. Without ATP, the sodium-potassium (\(Na^{+}/K^{+}\)) pump fails.
Sodium accumulates inside the cell, pulling water inward by osmosis and causing
acute cellular swelling.
A patient suffers a severe ischemic stroke affecting the left cerebral
hemisphere. Which type of tissue necrosis occurs in the central nervous
system?
A) Coagulative necrosis
B) Caseous necrosis
C) Liquefactive necrosis
D) Fat necrosis
Correct Answer: C) Liquefactive necrosis
,Rationale: Liquefactive necrosis is classic in brain tissue death. This occurs
because brain cells contain large amounts of hydrolytic enzymes and lipids. The
tissue rapidly dissolves into a liquid, viscous mass.
Which pathway is considered a non-inflammatory, highly regulated form of
programmed cell death?
A) Karyolysis
B) Necroptosis
C) Apoptosis
D) Autolysis
Correct Answer: C) Apoptosis
Rationale: Apoptosis is an energy-dependent process of programmed cell death.
It relies on caspase cascades to neatly dismantle cells without rupturing the plasma
membrane. This avoids triggering an inflammatory response in surrounding tissues.
Module 2: Fluid, Electrolyte, & Acid-Base Physiology
A patient with severe heart failure develops generalized edema. What is the
primary Starling force alteration causing this fluid shift into the interstitium?
A) Decreased capillary oncotic pressure
B) Increased capillary hydrostatic pressure
C) Increased interstitial oncotic pressure
D) Decreased interstitial hydrostatic pressure
Correct Answer: B) Increased capillary hydrostatic pressure
Rationale: Heart failure causes blood back-up and venous congestion. This
elevates the capillary hydrostatic pressure. The increased physical pressure
pushes fluid out of the intravascular space into the tissues, forming edema.
, An electrocardiogram (ECG) shows tall, peaked T-waves and a widened QRS
complex. Which electrolyte imbalance is most likely present?
A) Hypokalemia
B) Hypercalcemia
C) Hyperkalemia
D) Hyponatremia
Correct Answer: C) Hyperkalemia
Rationale: Hyperkalemia alters the resting membrane potential of cardiac myocytes.
It accelerates repolarization, which presents on an ECG as tall, peaked T-waves.
Severe elevations cause wide QRS complexes and carry a risk of ventricular
fibrillation.
A client presents with a serum calcium level of 6.8 mg/dL. Which clinical sign
would you expect to elicit during an assessment?
A) Positive Trousseau sign
B) Depressed deep tendon reflexes
C) Shortened QT interval
D) Constipation
Correct Answer: A) Positive Trousseau sign
Rationale: Hypocalcemia (\(<8.5\text{ mg/dL}\)) increases neuromuscular
excitability. This happens because low extracellular calcium levels allow sodium to
enter cells more easily. This change precipitates tetany, muscle spasms, a positive
Chvostek sign, and a positive Trousseau sign (carpopedal spasm induced by
inflating a blood pressure cuff).
Arterial blood gas results show: pH 7.28, \(PaCO_{2}\) 52 mmHg, and
\(HCO_{3}^{-}\) 24 mEq/L. How is this clinical state classified?
A) Compensated metabolic acidosis
B) Uncompensated respiratory acidosis
C) Uncompensated metabolic alkalosis
D) Fully compensated respiratory acidosis
Correct Answer: B) Uncompensated respiratory acidosis
200+ QUESTION AND VERIFIED ANSWERS
CUMULATIVE TEST BANK
A tissue biopsy of a chronic smoker's bronchi reveals that normal ciliated
columnar epithelial cells have been replaced by stratified squamous epithelial
cells. Which cellular adaptation is this?
,A) Dysplasia
B) Metaplasia
C) Hyperplasia
D) Anaplasia
Correct Answer: B) Metaplasia
Rationale: Metaplasia is the reversible replacement of one mature cell type by
another mature cell type. This adaptive change helps the tissue survive harsh,
chronic irritation like cigarette smoke. However, it results in a loss of protective
ciliary function.
During hypoxic cell injury, what directly causes the cellular swelling and
organelle dilation observed under microscopy?
A) Increased intracellular calcium activating proteases
B) Influx of sodium and water due to ATP depletion
C) Lactic acid accumulation dissolving the plasma membrane
D) Release of lysosomal enzymes into the cytoplasm
Correct Answer: B) Influx of sodium and water due to ATP depletion
Rationale: Hypoxia shuts down mitochondrial oxidative phosphorylation, causing
ATP depletion. Without ATP, the sodium-potassium (\(Na^{+}/K^{+}\)) pump fails.
Sodium accumulates inside the cell, pulling water inward by osmosis and causing
acute cellular swelling.
A patient suffers a severe ischemic stroke affecting the left cerebral
hemisphere. Which type of tissue necrosis occurs in the central nervous
system?
A) Coagulative necrosis
B) Caseous necrosis
C) Liquefactive necrosis
D) Fat necrosis
Correct Answer: C) Liquefactive necrosis
,Rationale: Liquefactive necrosis is classic in brain tissue death. This occurs
because brain cells contain large amounts of hydrolytic enzymes and lipids. The
tissue rapidly dissolves into a liquid, viscous mass.
Which pathway is considered a non-inflammatory, highly regulated form of
programmed cell death?
A) Karyolysis
B) Necroptosis
C) Apoptosis
D) Autolysis
Correct Answer: C) Apoptosis
Rationale: Apoptosis is an energy-dependent process of programmed cell death.
It relies on caspase cascades to neatly dismantle cells without rupturing the plasma
membrane. This avoids triggering an inflammatory response in surrounding tissues.
Module 2: Fluid, Electrolyte, & Acid-Base Physiology
A patient with severe heart failure develops generalized edema. What is the
primary Starling force alteration causing this fluid shift into the interstitium?
A) Decreased capillary oncotic pressure
B) Increased capillary hydrostatic pressure
C) Increased interstitial oncotic pressure
D) Decreased interstitial hydrostatic pressure
Correct Answer: B) Increased capillary hydrostatic pressure
Rationale: Heart failure causes blood back-up and venous congestion. This
elevates the capillary hydrostatic pressure. The increased physical pressure
pushes fluid out of the intravascular space into the tissues, forming edema.
, An electrocardiogram (ECG) shows tall, peaked T-waves and a widened QRS
complex. Which electrolyte imbalance is most likely present?
A) Hypokalemia
B) Hypercalcemia
C) Hyperkalemia
D) Hyponatremia
Correct Answer: C) Hyperkalemia
Rationale: Hyperkalemia alters the resting membrane potential of cardiac myocytes.
It accelerates repolarization, which presents on an ECG as tall, peaked T-waves.
Severe elevations cause wide QRS complexes and carry a risk of ventricular
fibrillation.
A client presents with a serum calcium level of 6.8 mg/dL. Which clinical sign
would you expect to elicit during an assessment?
A) Positive Trousseau sign
B) Depressed deep tendon reflexes
C) Shortened QT interval
D) Constipation
Correct Answer: A) Positive Trousseau sign
Rationale: Hypocalcemia (\(<8.5\text{ mg/dL}\)) increases neuromuscular
excitability. This happens because low extracellular calcium levels allow sodium to
enter cells more easily. This change precipitates tetany, muscle spasms, a positive
Chvostek sign, and a positive Trousseau sign (carpopedal spasm induced by
inflating a blood pressure cuff).
Arterial blood gas results show: pH 7.28, \(PaCO_{2}\) 52 mmHg, and
\(HCO_{3}^{-}\) 24 mEq/L. How is this clinical state classified?
A) Compensated metabolic acidosis
B) Uncompensated respiratory acidosis
C) Uncompensated metabolic alkalosis
D) Fully compensated respiratory acidosis
Correct Answer: B) Uncompensated respiratory acidosis
