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Advanced Pathophysiology Final Exam | 100% Guaranteed
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1.
During an acute myocardial infarction, the loss of oxygen supply leads to rapid
depletion of ATP in cardiac myocytes. Which downstream cellular consequence
directly causes irreversible injury?
A. Swelling from sodium-potassium pump failure
B. Leakage of intracellular enzymes due to membrane damage ⬛
C. Reversible lactic acidosis from anaerobic glycolysis
D. Reduced protein synthesis from ribosomal detachment
2.
A 41-year-old woman presents with progressive muscle weakness, especially in the
evening after repeated use. Neurological exam shows normal reflexes but fatigable
strength. Which mechanism best explains her symptoms?
A. Demyelination of peripheral motor neurons
B. Autoantibodies against acetylcholine receptors at the neuromuscular junction
⬛
C. Autoantibodies against presynaptic calcium channels
D. Genetic defect in sodium channel function
3.
Consider the renin-angiotensin-aldosterone system (RAAS). In a patient with
chronic kidney disease and reduced glomerular filtration, which maladaptive
RAAS effect contributes most to worsening hypertension?
A. Increased sodium excretion through aldosterone
B. Vasodilation of efferent arterioles
C. Vasoconstriction of systemic arterioles via angiotensin II ⬛
D. Inhibition of sympathetic outflow
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4.
TO
A 22-year-old athlete collapses during training. Autopsy reveals asymmetric
R
thickening of the interventricular septum with myofiber disarray. Which condition
best explains the pathophysiology?
A. Dilated cardiomyopathy
B. Hypertrophic obstructive cardiomyopathy ⬛
C. Restrictive cardiomyopathy
D. Viral myocarditis
5.
In systemic inflammatory response syndrome (SIRS), widespread release of
cytokines causes a dangerous cycle. Which abnormality best explains the
hypotension seen in septic shock?
A. Excessive vasodilation from nitric oxide production ⬛
B. Severe hypovolemia from dehydration
C. Increased myocardial contractility
D. Blockade of adrenergic receptors
6.
Which cellular adaptation is demonstrated when bronchial epithelial cells of a
chronic smoker transform into squamous epithelium?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia ⬛
D. Dysplasia
7.
A patient develops sudden shortness of breath following a long-haul flight. D-
dimer is elevated and imaging confirms a pulmonary embolism. Which mechanism
most directly explains systemic hypoxemia?
wisetutor
W
A+
1|Page
IS
ET
Advanced Pathophysiology Final Exam | 100% Guaranteed
U
Pass | Graded A+ | Latest Guide
TO
R
1.
During an acute myocardial infarction, the loss of oxygen supply leads to rapid
depletion of ATP in cardiac myocytes. Which downstream cellular consequence
directly causes irreversible injury?
A. Swelling from sodium-potassium pump failure
B. Leakage of intracellular enzymes due to membrane damage ⬛
C. Reversible lactic acidosis from anaerobic glycolysis
D. Reduced protein synthesis from ribosomal detachment
2.
A 41-year-old woman presents with progressive muscle weakness, especially in the
evening after repeated use. Neurological exam shows normal reflexes but fatigable
strength. Which mechanism best explains her symptoms?
A. Demyelination of peripheral motor neurons
B. Autoantibodies against acetylcholine receptors at the neuromuscular junction
⬛
C. Autoantibodies against presynaptic calcium channels
D. Genetic defect in sodium channel function
3.
Consider the renin-angiotensin-aldosterone system (RAAS). In a patient with
chronic kidney disease and reduced glomerular filtration, which maladaptive
RAAS effect contributes most to worsening hypertension?
A. Increased sodium excretion through aldosterone
B. Vasodilation of efferent arterioles
C. Vasoconstriction of systemic arterioles via angiotensin II ⬛
D. Inhibition of sympathetic outflow
wisetutor
, W
2|Page
IS
ET
U
4.
TO
A 22-year-old athlete collapses during training. Autopsy reveals asymmetric
R
thickening of the interventricular septum with myofiber disarray. Which condition
best explains the pathophysiology?
A. Dilated cardiomyopathy
B. Hypertrophic obstructive cardiomyopathy ⬛
C. Restrictive cardiomyopathy
D. Viral myocarditis
5.
In systemic inflammatory response syndrome (SIRS), widespread release of
cytokines causes a dangerous cycle. Which abnormality best explains the
hypotension seen in septic shock?
A. Excessive vasodilation from nitric oxide production ⬛
B. Severe hypovolemia from dehydration
C. Increased myocardial contractility
D. Blockade of adrenergic receptors
6.
Which cellular adaptation is demonstrated when bronchial epithelial cells of a
chronic smoker transform into squamous epithelium?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia ⬛
D. Dysplasia
7.
A patient develops sudden shortness of breath following a long-haul flight. D-
dimer is elevated and imaging confirms a pulmonary embolism. Which mechanism
most directly explains systemic hypoxemia?
wisetutor
