GOULD’S PATHOPHYSIOLOGY FOR
THE HEALTH PROFESSIONS (13TH ED)
COMPREHENSIVE EXAM QUESTIONS
AND ANSWERS. VERIFIED 2026/2027
1. Which cellular adaptation is characterized by the replacement of one mature cell type by
another mature cell type that is better able to withstand environmental stress?
A. Hyperplasia
B. Metaplasia
C. Dysplasia
D. Anaplasia
Answer: B
Conceptual Explanation: Metaplasia is a reversible change where one adult cell type is
replaced by another. Dysplasia is disordered growth, and anaplasia is a loss of
differentiation characteristic of malignancy.
2. In the context of fluid balance, which mechanism is primarily responsible for the ‘third-
spacing’ observed in patients with severe protein malnutrition?
A. Decreased capillary oncotic pressure
B. Increased capillary hydrostatic pressure
,C. Increased interstitial oncotic pressure
D. Lymphatic obstruction
Answer: A
Conceptual Explanation: Protein malnutrition leads to hypoalbuminemia, which
decreases the colloid osmotic (oncotic) pressure that normally keeps fluid inside the
capillaries, leading to edema in interstitial spaces or body cavities.
3. A patient presents with a blood pH of 7.31, PaCO2 of 50 mmHg, and HCO3- of 26 mEq/L.
Which acid-base imbalance is occurring?
A. Metabolic Acidosis
B. Metabolic Alkalosis
C. Respiratory Alkalosis
D. Respiratory Acidosis
Answer: D
Conceptual Explanation: A pH below 7.35 indicates acidosis. An elevated PaCO2 (>45
mmHg) indicates a respiratory cause for the acidosis.
4. Which mediator of inflammation is responsible for the prolonged pain sensation and the
potentiation of the effects of histamine?
A. Cytokines
B. Prostaglandins
, C. Complement System
D. Leukotrienes
Answer: B
Conceptual Explanation: Prostaglandins cause vasodilation, increased capillary
permeability, and specifically sensitize pain receptors and increase the pain-inducing effect
of other mediators like bradykinin.
5. Which type of hypersensitivity reaction involves the formation of antigen-antibody
complexes that are deposited in tissue, leading to complement activation and inflammation?
A. Type III (Immune Complex)
B. Type II (Cytotoxic)
C. Type I (Immediate)
D. Type IV (Delayed)
Answer: A
Conceptual Explanation: Type III reactions occur when complexes are deposited in walls
of blood vessels or tissues (e.g., SLE, Glomerulonephritis), triggering an inflammatory
response.
6. Which characteristic of a neoplasm is the most definitive indicator of malignancy?
A. Rapid rate of growth
B. Invasion of surrounding tissue
THE HEALTH PROFESSIONS (13TH ED)
COMPREHENSIVE EXAM QUESTIONS
AND ANSWERS. VERIFIED 2026/2027
1. Which cellular adaptation is characterized by the replacement of one mature cell type by
another mature cell type that is better able to withstand environmental stress?
A. Hyperplasia
B. Metaplasia
C. Dysplasia
D. Anaplasia
Answer: B
Conceptual Explanation: Metaplasia is a reversible change where one adult cell type is
replaced by another. Dysplasia is disordered growth, and anaplasia is a loss of
differentiation characteristic of malignancy.
2. In the context of fluid balance, which mechanism is primarily responsible for the ‘third-
spacing’ observed in patients with severe protein malnutrition?
A. Decreased capillary oncotic pressure
B. Increased capillary hydrostatic pressure
,C. Increased interstitial oncotic pressure
D. Lymphatic obstruction
Answer: A
Conceptual Explanation: Protein malnutrition leads to hypoalbuminemia, which
decreases the colloid osmotic (oncotic) pressure that normally keeps fluid inside the
capillaries, leading to edema in interstitial spaces or body cavities.
3. A patient presents with a blood pH of 7.31, PaCO2 of 50 mmHg, and HCO3- of 26 mEq/L.
Which acid-base imbalance is occurring?
A. Metabolic Acidosis
B. Metabolic Alkalosis
C. Respiratory Alkalosis
D. Respiratory Acidosis
Answer: D
Conceptual Explanation: A pH below 7.35 indicates acidosis. An elevated PaCO2 (>45
mmHg) indicates a respiratory cause for the acidosis.
4. Which mediator of inflammation is responsible for the prolonged pain sensation and the
potentiation of the effects of histamine?
A. Cytokines
B. Prostaglandins
, C. Complement System
D. Leukotrienes
Answer: B
Conceptual Explanation: Prostaglandins cause vasodilation, increased capillary
permeability, and specifically sensitize pain receptors and increase the pain-inducing effect
of other mediators like bradykinin.
5. Which type of hypersensitivity reaction involves the formation of antigen-antibody
complexes that are deposited in tissue, leading to complement activation and inflammation?
A. Type III (Immune Complex)
B. Type II (Cytotoxic)
C. Type I (Immediate)
D. Type IV (Delayed)
Answer: A
Conceptual Explanation: Type III reactions occur when complexes are deposited in walls
of blood vessels or tissues (e.g., SLE, Glomerulonephritis), triggering an inflammatory
response.
6. Which characteristic of a neoplasm is the most definitive indicator of malignancy?
A. Rapid rate of growth
B. Invasion of surrounding tissue
