NURS 5433 MIDTERM EXAM ACTUAL QUESTIONS AND
ANSWERS - LATEST AND COMPLETE UPDATE WITH
VERIFIED SOLUTIONS – ASSURED PASS WITH INSTANT
DOWNLOAD PDF.
1. A nurse practitioner explains that cellular adaptation to chronic hypoxia in
skeletal muscle most commonly results in which change?
A. Hyperplasia due to increased mitotic activity
B. Increased mitochondrial number to improve oxygen utilization
C. Cellular dysplasia caused by DNA damage
D. Apoptosis mediated by caspase activation
Rationale: Chronic hypoxia leads to adaptive increases in mitochondrial
density and capillary networks to enhance oxygen extraction rather than
uncontrolled growth or cell death.
2. During ischemia, ATP depletion most directly disrupts which cellular
process first?
A. DNA transcription
B. Protein synthesis in the nucleus
C. Sodium–potassium pump function at the cell membrane
D. Lysosomal enzyme production
Rationale: Loss of ATP impairs membrane ion pumps, causing sodium and
water influx and early cellular swelling.
3. Which mediator is primarily responsible for the vascular permeability seen
in acute inflammation?
A. Prostaglandin E2
B. Histamine
C. Bradykinin
, D. Leukotriene B4
Rationale: Histamine released from mast cells causes rapid vasodilation
and increased vascular permeability in acute inflammation.
4. A patient with chronic inflammation is at increased risk for which long-term
complication?
A. Tissue atrophy from apoptosis alone
B. Complete resolution without sequelae
C. Fibrosis with loss of normal tissue architecture
D. Decreased angiogenesis
Rationale: Persistent inflammation promotes fibroblast activation and
collagen deposition, leading to fibrosis.
5. Which cytokine is most closely associated with fever generation in systemic
inflammatory response?
A. Interleukin-4
B. Interleukin-10
C. Interleukin-1
D. Transforming growth factor-β
Rationale: IL-1 acts on the hypothalamus to raise the thermoregulatory set
point, producing fever.
6. In innate immunity, which cell is the primary first responder to bacterial
invasion in tissues?
A. Lymphocyte
B. Neutrophil
C. Plasma cell
D. Natural killer cell
Rationale: Neutrophils rapidly migrate to sites of infection and perform
phagocytosis.
,7. Which immunoglobulin is most responsible for immediate hypersensitivity
reactions?
A. IgG
B. IgM
C. IgE
D. IgA
Rationale: IgE binds to mast cells and basophils, triggering histamine
release upon antigen exposure.
8. A nurse practitioner reviews a patient’s genetic test showing an autosomal
dominant disorder. Which inheritance pattern is expected?
A. Disease expression only when both alleles are affected
B. Vertical transmission across successive generations
C. Disease limited to male offspring
D. Expression only with mitochondrial DNA
Rationale: Autosomal dominant disorders typically appear in every
generation with affected individuals transmitting the condition.
9. Which mechanism best explains sickle cell disease pathology?
A. Enzyme deficiency causing lipid accumulation
B. Structural hemoglobin mutation leading to erythrocyte deformation
C. Autoimmune destruction of red blood cells
D. Bone marrow failure
Rationale: A point mutation in the beta-globin gene alters hemoglobin
structure, causing sickling under stress.
10.When evaluating acid–base balance, metabolic acidosis is characterized by
which finding?
A. Increased pH and decreased PaCO₂
B. Normal pH with elevated bicarbonate
, C. Decreased pH and decreased bicarbonate
D. Increased pH with increased bicarbonate
Rationale: Metabolic acidosis results from loss of bicarbonate or increased
acid production.
11.Which compensatory response is expected in metabolic acidosis?
A. Decreased respiratory rate
B. Increased respiratory rate to lower PaCO₂
C. Renal retention of hydrogen ions
D. Suppressed ventilation
Rationale: Hyperventilation reduces CO₂, helping raise pH toward normal.
12.A patient with left-sided heart failure most commonly develops which
complication?
A. Peripheral edema
B. Pulmonary congestion
C. Hepatomegaly
D. Ascites
Rationale: Left ventricular failure leads to increased pulmonary venous
pressure and fluid accumulation in the lungs.
13.Which factor most increases myocardial oxygen demand?
A. Decreased heart rate
B. Increased ventricular wall tension
C. Reduced preload
D. Decreased afterload
Rationale: Wall tension, influenced by pressure and volume, significantly
raises oxygen consumption.
14.Atherosclerosis begins with which primary event?
A. Smooth muscle hyperplasia
ANSWERS - LATEST AND COMPLETE UPDATE WITH
VERIFIED SOLUTIONS – ASSURED PASS WITH INSTANT
DOWNLOAD PDF.
1. A nurse practitioner explains that cellular adaptation to chronic hypoxia in
skeletal muscle most commonly results in which change?
A. Hyperplasia due to increased mitotic activity
B. Increased mitochondrial number to improve oxygen utilization
C. Cellular dysplasia caused by DNA damage
D. Apoptosis mediated by caspase activation
Rationale: Chronic hypoxia leads to adaptive increases in mitochondrial
density and capillary networks to enhance oxygen extraction rather than
uncontrolled growth or cell death.
2. During ischemia, ATP depletion most directly disrupts which cellular
process first?
A. DNA transcription
B. Protein synthesis in the nucleus
C. Sodium–potassium pump function at the cell membrane
D. Lysosomal enzyme production
Rationale: Loss of ATP impairs membrane ion pumps, causing sodium and
water influx and early cellular swelling.
3. Which mediator is primarily responsible for the vascular permeability seen
in acute inflammation?
A. Prostaglandin E2
B. Histamine
C. Bradykinin
, D. Leukotriene B4
Rationale: Histamine released from mast cells causes rapid vasodilation
and increased vascular permeability in acute inflammation.
4. A patient with chronic inflammation is at increased risk for which long-term
complication?
A. Tissue atrophy from apoptosis alone
B. Complete resolution without sequelae
C. Fibrosis with loss of normal tissue architecture
D. Decreased angiogenesis
Rationale: Persistent inflammation promotes fibroblast activation and
collagen deposition, leading to fibrosis.
5. Which cytokine is most closely associated with fever generation in systemic
inflammatory response?
A. Interleukin-4
B. Interleukin-10
C. Interleukin-1
D. Transforming growth factor-β
Rationale: IL-1 acts on the hypothalamus to raise the thermoregulatory set
point, producing fever.
6. In innate immunity, which cell is the primary first responder to bacterial
invasion in tissues?
A. Lymphocyte
B. Neutrophil
C. Plasma cell
D. Natural killer cell
Rationale: Neutrophils rapidly migrate to sites of infection and perform
phagocytosis.
,7. Which immunoglobulin is most responsible for immediate hypersensitivity
reactions?
A. IgG
B. IgM
C. IgE
D. IgA
Rationale: IgE binds to mast cells and basophils, triggering histamine
release upon antigen exposure.
8. A nurse practitioner reviews a patient’s genetic test showing an autosomal
dominant disorder. Which inheritance pattern is expected?
A. Disease expression only when both alleles are affected
B. Vertical transmission across successive generations
C. Disease limited to male offspring
D. Expression only with mitochondrial DNA
Rationale: Autosomal dominant disorders typically appear in every
generation with affected individuals transmitting the condition.
9. Which mechanism best explains sickle cell disease pathology?
A. Enzyme deficiency causing lipid accumulation
B. Structural hemoglobin mutation leading to erythrocyte deformation
C. Autoimmune destruction of red blood cells
D. Bone marrow failure
Rationale: A point mutation in the beta-globin gene alters hemoglobin
structure, causing sickling under stress.
10.When evaluating acid–base balance, metabolic acidosis is characterized by
which finding?
A. Increased pH and decreased PaCO₂
B. Normal pH with elevated bicarbonate
, C. Decreased pH and decreased bicarbonate
D. Increased pH with increased bicarbonate
Rationale: Metabolic acidosis results from loss of bicarbonate or increased
acid production.
11.Which compensatory response is expected in metabolic acidosis?
A. Decreased respiratory rate
B. Increased respiratory rate to lower PaCO₂
C. Renal retention of hydrogen ions
D. Suppressed ventilation
Rationale: Hyperventilation reduces CO₂, helping raise pH toward normal.
12.A patient with left-sided heart failure most commonly develops which
complication?
A. Peripheral edema
B. Pulmonary congestion
C. Hepatomegaly
D. Ascites
Rationale: Left ventricular failure leads to increased pulmonary venous
pressure and fluid accumulation in the lungs.
13.Which factor most increases myocardial oxygen demand?
A. Decreased heart rate
B. Increased ventricular wall tension
C. Reduced preload
D. Decreased afterload
Rationale: Wall tension, influenced by pressure and volume, significantly
raises oxygen consumption.
14.Atherosclerosis begins with which primary event?
A. Smooth muscle hyperplasia
