NURS 6501 ADVANCED PATHOPHYSIOLOGY MIDTERM EXAM
QUESTIONS AND CORRECT ANSWERS WITH VERIFIED
SOLUTIONS AND COMPLETE EXPLANATIONS| ALREADY GRADE
A+ 2026.
1. Which mechanism best explains the development of edema in heart
failure?
A. Increased plasma oncotic pressure
B. Decreased capillary hydrostatic pressure
C. Increased capillary hydrostatic pressure
D. Increased lymphatic drainage
Correct Answer: C
Explanation: In heart failure, elevated venous pressure increases
capillary hydrostatic pressure, pushing fluid into interstitial spaces,
causing edema. The other options would reduce edema rather than cause
it.
2. A patient with chronic inflammation shows elevated C-reactive protein
(CRP). What is the primary source of CRP?
A. Neutrophils
B. Hepatocytes
C. Macrophages
D. Lymphocytes
Correct Answer: B
Explanation: CRP is an acute-phase protein produced by hepatocytes in
response to inflammatory cytokines like IL-6. Other cells contribute to
inflammation but do not produce CRP.
3. Which electrolyte imbalance is most likely to cause cardiac arrhythmias?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hypomagnesemia
Correct Answer: B
Explanation: Potassium plays a critical role in cardiac conduction.
Hypokalemia can cause dangerous arrhythmias due to altered membrane
potentials.
,4. What is the primary pathophysiological feature of Type 1 diabetes
mellitus?
A. Insulin resistance
B. Autoimmune destruction of beta cells
C. Increased glucagon secretion
D. Decreased hepatic glucose output
Correct Answer: B
Explanation: Type 1 diabetes is characterized by autoimmune destruction
of pancreatic beta cells, leading to absolute insulin deficiency.
5. Which process describes the movement of water across a semipermeable
membrane?
A. Diffusion
B. Filtration
C. Osmosis
D. Active transport
Correct Answer: C
Explanation: Osmosis is the movement of water across a semipermeable
membrane from low solute concentration to high solute concentration.
6. A decrease in pH and increase in CO₂ indicates which condition?
A. Metabolic alkalosis
B. Respiratory acidosis
C. Metabolic acidosis
D. Respiratory alkalosis
Correct Answer: B
Explanation: Elevated CO₂ leads to respiratory acidosis due to carbonic
acid accumulation, lowering pH.
7. Which cytokine is primarily responsible for fever production?
A. IL-1
B. IL-10
C. TNF-beta
D. Interferon-gamma
Correct Answer: A
, Explanation: IL-1 acts on the hypothalamus to raise body temperature,
leading to fever.
8. What is the hallmark of apoptosis?
A. Cell swelling
B. Inflammation
C. Programmed cell death
D. Necrosis
Correct Answer: C
Explanation: Apoptosis is a regulated, programmed process of cell death
without inflammation, unlike necrosis.
9. Which condition results from decreased insulin sensitivity?
A. Type 1 diabetes
B. Type 2 diabetes
C. Hypoglycemia
D. Diabetes insipidus
Correct Answer: B
Explanation: Type 2 diabetes is characterized by insulin resistance,
where cells do not respond effectively to insulin.
10.Which hormone increases blood glucose levels?
A. Insulin
B. Glucagon
C. Oxytocin
D. Aldosterone
Correct Answer: B
Explanation: Glucagon raises blood glucose by promoting glycogen
breakdown and gluconeogenesis.
11.What is the primary cause of iron deficiency anemia?
A. Increased RBC production
B. Chronic blood loss
C. Decreased vitamin B12
D. Increased hemolysis
Correct Answer: B
, Explanation: Chronic blood loss depletes iron stores, leading to iron
deficiency anemia.
12.Which organ is most affected by systemic hypertension?
A. Liver
B. Brain
C. Kidneys
D. Pancreas
Correct Answer: C
Explanation: Hypertension damages renal vasculature, leading to
nephropathy.
13.What is the main function of aldosterone?
A. Increase potassium excretion
B. Decrease sodium reabsorption
C. Increase glucose uptake
D. Reduce blood pressure
Correct Answer: A
Explanation: Aldosterone promotes sodium retention and potassium
excretion in the kidneys.
14.Which condition is associated with increased intracranial pressure?
A. Hypotension
B. Brain edema
C. Hypoxia
D. Hyperglycemia
Correct Answer: B
Explanation: Brain edema increases intracranial pressure due to fluid
accumulation in brain tissues.
15.What type of hypersensitivity reaction is mediated by IgE?
A. Type I
B. Type II
C. Type III
D. Type IV
Correct Answer: A
QUESTIONS AND CORRECT ANSWERS WITH VERIFIED
SOLUTIONS AND COMPLETE EXPLANATIONS| ALREADY GRADE
A+ 2026.
1. Which mechanism best explains the development of edema in heart
failure?
A. Increased plasma oncotic pressure
B. Decreased capillary hydrostatic pressure
C. Increased capillary hydrostatic pressure
D. Increased lymphatic drainage
Correct Answer: C
Explanation: In heart failure, elevated venous pressure increases
capillary hydrostatic pressure, pushing fluid into interstitial spaces,
causing edema. The other options would reduce edema rather than cause
it.
2. A patient with chronic inflammation shows elevated C-reactive protein
(CRP). What is the primary source of CRP?
A. Neutrophils
B. Hepatocytes
C. Macrophages
D. Lymphocytes
Correct Answer: B
Explanation: CRP is an acute-phase protein produced by hepatocytes in
response to inflammatory cytokines like IL-6. Other cells contribute to
inflammation but do not produce CRP.
3. Which electrolyte imbalance is most likely to cause cardiac arrhythmias?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hypomagnesemia
Correct Answer: B
Explanation: Potassium plays a critical role in cardiac conduction.
Hypokalemia can cause dangerous arrhythmias due to altered membrane
potentials.
,4. What is the primary pathophysiological feature of Type 1 diabetes
mellitus?
A. Insulin resistance
B. Autoimmune destruction of beta cells
C. Increased glucagon secretion
D. Decreased hepatic glucose output
Correct Answer: B
Explanation: Type 1 diabetes is characterized by autoimmune destruction
of pancreatic beta cells, leading to absolute insulin deficiency.
5. Which process describes the movement of water across a semipermeable
membrane?
A. Diffusion
B. Filtration
C. Osmosis
D. Active transport
Correct Answer: C
Explanation: Osmosis is the movement of water across a semipermeable
membrane from low solute concentration to high solute concentration.
6. A decrease in pH and increase in CO₂ indicates which condition?
A. Metabolic alkalosis
B. Respiratory acidosis
C. Metabolic acidosis
D. Respiratory alkalosis
Correct Answer: B
Explanation: Elevated CO₂ leads to respiratory acidosis due to carbonic
acid accumulation, lowering pH.
7. Which cytokine is primarily responsible for fever production?
A. IL-1
B. IL-10
C. TNF-beta
D. Interferon-gamma
Correct Answer: A
, Explanation: IL-1 acts on the hypothalamus to raise body temperature,
leading to fever.
8. What is the hallmark of apoptosis?
A. Cell swelling
B. Inflammation
C. Programmed cell death
D. Necrosis
Correct Answer: C
Explanation: Apoptosis is a regulated, programmed process of cell death
without inflammation, unlike necrosis.
9. Which condition results from decreased insulin sensitivity?
A. Type 1 diabetes
B. Type 2 diabetes
C. Hypoglycemia
D. Diabetes insipidus
Correct Answer: B
Explanation: Type 2 diabetes is characterized by insulin resistance,
where cells do not respond effectively to insulin.
10.Which hormone increases blood glucose levels?
A. Insulin
B. Glucagon
C. Oxytocin
D. Aldosterone
Correct Answer: B
Explanation: Glucagon raises blood glucose by promoting glycogen
breakdown and gluconeogenesis.
11.What is the primary cause of iron deficiency anemia?
A. Increased RBC production
B. Chronic blood loss
C. Decreased vitamin B12
D. Increased hemolysis
Correct Answer: B
, Explanation: Chronic blood loss depletes iron stores, leading to iron
deficiency anemia.
12.Which organ is most affected by systemic hypertension?
A. Liver
B. Brain
C. Kidneys
D. Pancreas
Correct Answer: C
Explanation: Hypertension damages renal vasculature, leading to
nephropathy.
13.What is the main function of aldosterone?
A. Increase potassium excretion
B. Decrease sodium reabsorption
C. Increase glucose uptake
D. Reduce blood pressure
Correct Answer: A
Explanation: Aldosterone promotes sodium retention and potassium
excretion in the kidneys.
14.Which condition is associated with increased intracranial pressure?
A. Hypotension
B. Brain edema
C. Hypoxia
D. Hyperglycemia
Correct Answer: B
Explanation: Brain edema increases intracranial pressure due to fluid
accumulation in brain tissues.
15.What type of hypersensitivity reaction is mediated by IgE?
A. Type I
B. Type II
C. Type III
D. Type IV
Correct Answer: A
