NR 507 ADVANCED
PATHOPHYSIOLOGY PRACTICE EXAM
QUESTIONS & ANSWERS
(CHAMBERLAIN) 100% GUARANTEE
PASS
1. Which cellular adaptation process is characterized by an increase in the number of cells
resulting from an increased rate of cellular division?
A. Hyperplasia
B. Hypertrophy
C. Metaplasia
D. Dysplasia
Answer: A
Conceptual Explanation: Hyperplasia is an increase in the number of cells in an organ or
tissue. Hypertrophy refers to an increase in cell size, metaplasia is the replacement of one
cell type with another, and dysplasia refers to abnormal changes in size and shape.
2. In the context of cellular injury, what is the primary mechanism of damage caused by
carbon monoxide?
A. Direct toxic effect on the lungs
,B. Inhibition of the sodium-potassium pump
C. Destruction of cell membranes via lipid peroxidation
D. Reduced oxygen-carrying capacity of hemoglobin
Answer: D
Conceptual Explanation: Carbon monoxide has an affinity for hemoglobin that is 200
times greater than oxygen, leading to the formation of carboxyhemoglobin and preventing
oxygen from binding, which causes systemic hypoxia.
3. A patient presents with tall, peaked T waves and a widened QRS complex on their EKG.
Which electrolyte imbalance is most likely?
A. Hypokalemia
B. Hypercalcemia
C. Hyperkalemia
D. Hyponatremia
Answer: C
Conceptual Explanation: Hyperkalemia (high serum potassium) affects cardiac
conduction, leading to peaked T waves, prolonged PR intervals, and eventual widening of
the QRS complex, which can lead to cardiac arrest.
, 4. Which type of hypersensitivity reaction is mediated by IgE and involves the release of
histamine from mast cells?
A. Type I
B. Type II
C. Type III
D. Type IV
Answer: A
Conceptual Explanation: Type I hypersensitivity is IgE-mediated (allergic) and involves
mast cell degranulation. Type II is tissue-specific, Type III is immune-complex mediated,
and Type IV is cell-mediated (delayed).
5. What is the pathophysiological hallmark of Multiple Sclerosis (MS)?
A. Depletion of dopamine in the substantia nigra
B. Degeneration of the lower motor neurons
C. Demyelination of the central nervous system axons
D. Accumulation of amyloid-beta plaques
Answer: C
Conceptual Explanation: Multiple Sclerosis is an autoimmune inflammatory disease
characterized by the demyelination of nerve fibers in the brain and spinal cord.
PATHOPHYSIOLOGY PRACTICE EXAM
QUESTIONS & ANSWERS
(CHAMBERLAIN) 100% GUARANTEE
PASS
1. Which cellular adaptation process is characterized by an increase in the number of cells
resulting from an increased rate of cellular division?
A. Hyperplasia
B. Hypertrophy
C. Metaplasia
D. Dysplasia
Answer: A
Conceptual Explanation: Hyperplasia is an increase in the number of cells in an organ or
tissue. Hypertrophy refers to an increase in cell size, metaplasia is the replacement of one
cell type with another, and dysplasia refers to abnormal changes in size and shape.
2. In the context of cellular injury, what is the primary mechanism of damage caused by
carbon monoxide?
A. Direct toxic effect on the lungs
,B. Inhibition of the sodium-potassium pump
C. Destruction of cell membranes via lipid peroxidation
D. Reduced oxygen-carrying capacity of hemoglobin
Answer: D
Conceptual Explanation: Carbon monoxide has an affinity for hemoglobin that is 200
times greater than oxygen, leading to the formation of carboxyhemoglobin and preventing
oxygen from binding, which causes systemic hypoxia.
3. A patient presents with tall, peaked T waves and a widened QRS complex on their EKG.
Which electrolyte imbalance is most likely?
A. Hypokalemia
B. Hypercalcemia
C. Hyperkalemia
D. Hyponatremia
Answer: C
Conceptual Explanation: Hyperkalemia (high serum potassium) affects cardiac
conduction, leading to peaked T waves, prolonged PR intervals, and eventual widening of
the QRS complex, which can lead to cardiac arrest.
, 4. Which type of hypersensitivity reaction is mediated by IgE and involves the release of
histamine from mast cells?
A. Type I
B. Type II
C. Type III
D. Type IV
Answer: A
Conceptual Explanation: Type I hypersensitivity is IgE-mediated (allergic) and involves
mast cell degranulation. Type II is tissue-specific, Type III is immune-complex mediated,
and Type IV is cell-mediated (delayed).
5. What is the pathophysiological hallmark of Multiple Sclerosis (MS)?
A. Depletion of dopamine in the substantia nigra
B. Degeneration of the lower motor neurons
C. Demyelination of the central nervous system axons
D. Accumulation of amyloid-beta plaques
Answer: C
Conceptual Explanation: Multiple Sclerosis is an autoimmune inflammatory disease
characterized by the demyelination of nerve fibers in the brain and spinal cord.
