PATHOPHYSIOLOGY FOR THE
HEALTH PROFESSIONS (7TH ED) -
COMPREHENSIVE EXAM QUESTIONS
AND ANSWERS. VERIFIED 2026/2027
1. Which of the following cellular adaptations is characterized by the replacement of one
mature cell type by another, often in response to chronic irritation?
A. Hypertrophy
B. Metaplasia
C. Dysplasia
D. Anaplasia
Answer: B
Conceptual Explanation: Metaplasia occurs when one mature cell type is replaced by a
different mature cell type, such as ciliated columnar epithelium being replaced by stratified
squamous epithelium in smokers.
2. In the context of fluid balance, what is the primary cause of edema in a patient with liver
failure and hypoalbuminemia?
A. Increased capillary hydrostatic pressure
B. Obstruction of lymphatic circulation
,C. Increased capillary permeability
D. Decreased capillary osmotic pressure
Answer: D
Conceptual Explanation: Hypoalbuminemia reduces the plasma protein levels, leading to
decreased capillary osmotic pressure, which prevents fluid from being pulled back into the
venous end of the capillary.
3. Which arterial blood gas result is consistent with a patient experiencing uncompensated
metabolic acidosis?
A. pH 7.35, PaCO2 48, HCO3 28
B. pH 7.30, PaCO2 40, HCO3 18
C. pH 7.48, PaCO2 30, HCO3 22
D. pH 7.25, PaCO2 55, HCO3 24
Answer: B
Conceptual Explanation: Metabolic acidosis is defined by a low pH (<7.35) and low
bicarbonate (<22 mEq/L). If the PaCO2 is normal, the respiratory system has not yet
compensated.
4. Which chemical mediator is primarily responsible for the immediate vasodilation and
increased capillary permeability during an acute inflammatory response?
A. Leukotrienes
, B. Histamine
C. Prostaglandins
D. Cytokines
Answer: B
Conceptual Explanation: Histamine is released immediately from mast cells during injury,
causing rapid vasodilation and increased permeability.
5. A Type III hypersensitivity reaction, such as Serum Sickness, is mediated by which
mechanism?
A. IgE binding to mast cells
B. Deposition of antigen-antibody complexes in tissue
C. Cytotoxic T-cell destruction of host cells
D. IgG or IgM antibodies attacking specific cell surface antigens
Answer: B
Conceptual Explanation: Type III hypersensitivities involve immune complexes (antigen-
antibody) that deposit in tissues like joints or kidneys, triggering inflammation.
6. Which of the following describes ‘anaplasia’ in a tumor biopsy?
A. Cells that vary in size and shape but remain differentiated
B. Undifferentiated cells with variable nuclear and cell structures
HEALTH PROFESSIONS (7TH ED) -
COMPREHENSIVE EXAM QUESTIONS
AND ANSWERS. VERIFIED 2026/2027
1. Which of the following cellular adaptations is characterized by the replacement of one
mature cell type by another, often in response to chronic irritation?
A. Hypertrophy
B. Metaplasia
C. Dysplasia
D. Anaplasia
Answer: B
Conceptual Explanation: Metaplasia occurs when one mature cell type is replaced by a
different mature cell type, such as ciliated columnar epithelium being replaced by stratified
squamous epithelium in smokers.
2. In the context of fluid balance, what is the primary cause of edema in a patient with liver
failure and hypoalbuminemia?
A. Increased capillary hydrostatic pressure
B. Obstruction of lymphatic circulation
,C. Increased capillary permeability
D. Decreased capillary osmotic pressure
Answer: D
Conceptual Explanation: Hypoalbuminemia reduces the plasma protein levels, leading to
decreased capillary osmotic pressure, which prevents fluid from being pulled back into the
venous end of the capillary.
3. Which arterial blood gas result is consistent with a patient experiencing uncompensated
metabolic acidosis?
A. pH 7.35, PaCO2 48, HCO3 28
B. pH 7.30, PaCO2 40, HCO3 18
C. pH 7.48, PaCO2 30, HCO3 22
D. pH 7.25, PaCO2 55, HCO3 24
Answer: B
Conceptual Explanation: Metabolic acidosis is defined by a low pH (<7.35) and low
bicarbonate (<22 mEq/L). If the PaCO2 is normal, the respiratory system has not yet
compensated.
4. Which chemical mediator is primarily responsible for the immediate vasodilation and
increased capillary permeability during an acute inflammatory response?
A. Leukotrienes
, B. Histamine
C. Prostaglandins
D. Cytokines
Answer: B
Conceptual Explanation: Histamine is released immediately from mast cells during injury,
causing rapid vasodilation and increased permeability.
5. A Type III hypersensitivity reaction, such as Serum Sickness, is mediated by which
mechanism?
A. IgE binding to mast cells
B. Deposition of antigen-antibody complexes in tissue
C. Cytotoxic T-cell destruction of host cells
D. IgG or IgM antibodies attacking specific cell surface antigens
Answer: B
Conceptual Explanation: Type III hypersensitivities involve immune complexes (antigen-
antibody) that deposit in tissues like joints or kidneys, triggering inflammation.
6. Which of the following describes ‘anaplasia’ in a tumor biopsy?
A. Cells that vary in size and shape but remain differentiated
B. Undifferentiated cells with variable nuclear and cell structures
