NUR 5461 ADVANCED
PATHOPHYSIOLOGY
COMPREHENSIVE EXAM PREP
QUESTIONS AND CORRECT ANSWERS
2026/2027
1. A 55-year-old male with chronic hypertension presents with left ventricular enlargement.
Which cellular adaptation is primarily responsible for this change?
A. Hyperplasia
B. Metaplasia
C. Hypertrophy
D. Dysplasia
Answer: C
Conceptual Explanation: Cardiac muscle cells are non-dividing; therefore, they increase in
size (hypertrophy) rather than number (hyperplasia) when faced with increased afterload
from hypertension.
2. Which mechanism is responsible for the movement of water between the intracellular and
extracellular fluid compartments?
A. Active transport
,B. Osmosis
C. Facilitated diffusion
D. Pinocytosis
Answer: B
Conceptual Explanation: Osmosis is the primary mechanism for water movement, driven
by osmotic pressure gradients created by solutes like sodium and proteins.
3. In the process of inflammation, which cytokine is primarily responsible for inducing the
synthesis of acute-phase proteins by the liver?
A. Interleukin-1 (IL-1)
B. Interferon-gamma
C. Interleukin-6 (IL-6)
D. Tumor Necrosis Factor-alpha (TNF-a)
Answer: C
Conceptual Explanation: IL-6 is the principal mediator of the acute-phase response,
stimulating the liver to produce proteins like C-reactive protein (CRP).
4. A patient is diagnosed with Type I Hypersensitivity. Which antibody isotype is
predominantly involved in the degranulation of mast cells?
A. IgG
B. IgM
, C. IgE
D. IgA
Answer: C
Conceptual Explanation: Type I hypersensitivity is mediated by IgE antibodies, which
bind to high-affinity receptors on mast cells and basophils, leading to histamine release
upon allergen exposure.
5. What is the primary pathophysiological defect in Myasthenia Gravis?
A. Destruction of the myelin sheath in the CNS
B. Loss of dopaminergic neurons in the substantia nigra
C. Autoimmune destruction of acetylcholine receptors at the neuromuscular junction
D. Inhibited release of acetylcholine from the presynaptic terminal
Answer: C
Conceptual Explanation: Myasthenia Gravis is an autoimmune disease where IgG
antibodies block or destroy nicotinic acetylcholine receptors at the postsynaptic
neuromuscular junction.
6. Which of the following electrolyte imbalances is most closely associated with the
development of Torsades de Pointes?
A. Hypernatremia
B. Hypomagnesemia
PATHOPHYSIOLOGY
COMPREHENSIVE EXAM PREP
QUESTIONS AND CORRECT ANSWERS
2026/2027
1. A 55-year-old male with chronic hypertension presents with left ventricular enlargement.
Which cellular adaptation is primarily responsible for this change?
A. Hyperplasia
B. Metaplasia
C. Hypertrophy
D. Dysplasia
Answer: C
Conceptual Explanation: Cardiac muscle cells are non-dividing; therefore, they increase in
size (hypertrophy) rather than number (hyperplasia) when faced with increased afterload
from hypertension.
2. Which mechanism is responsible for the movement of water between the intracellular and
extracellular fluid compartments?
A. Active transport
,B. Osmosis
C. Facilitated diffusion
D. Pinocytosis
Answer: B
Conceptual Explanation: Osmosis is the primary mechanism for water movement, driven
by osmotic pressure gradients created by solutes like sodium and proteins.
3. In the process of inflammation, which cytokine is primarily responsible for inducing the
synthesis of acute-phase proteins by the liver?
A. Interleukin-1 (IL-1)
B. Interferon-gamma
C. Interleukin-6 (IL-6)
D. Tumor Necrosis Factor-alpha (TNF-a)
Answer: C
Conceptual Explanation: IL-6 is the principal mediator of the acute-phase response,
stimulating the liver to produce proteins like C-reactive protein (CRP).
4. A patient is diagnosed with Type I Hypersensitivity. Which antibody isotype is
predominantly involved in the degranulation of mast cells?
A. IgG
B. IgM
, C. IgE
D. IgA
Answer: C
Conceptual Explanation: Type I hypersensitivity is mediated by IgE antibodies, which
bind to high-affinity receptors on mast cells and basophils, leading to histamine release
upon allergen exposure.
5. What is the primary pathophysiological defect in Myasthenia Gravis?
A. Destruction of the myelin sheath in the CNS
B. Loss of dopaminergic neurons in the substantia nigra
C. Autoimmune destruction of acetylcholine receptors at the neuromuscular junction
D. Inhibited release of acetylcholine from the presynaptic terminal
Answer: C
Conceptual Explanation: Myasthenia Gravis is an autoimmune disease where IgG
antibodies block or destroy nicotinic acetylcholine receptors at the postsynaptic
neuromuscular junction.
6. Which of the following electrolyte imbalances is most closely associated with the
development of Torsades de Pointes?
A. Hypernatremia
B. Hypomagnesemia
