Pathophysiology
✅ 70 Verified Practice Questions with Correct Answers and
Rationales
1. Which of the following is a classic sign of right-sided heart failure?
A. Pulmonary edema
B. Jugular vein distention
C. Cyanosis
D. Tachycardia
✅ Correct Answer: B. Jugular vein distention
💡 Rationale: Right-sided heart failure leads to increased venous pressure, resulting in jugular
vein distention.
2. Which of the following is a primary characteristic of chronic obstructive
pulmonary disease (COPD)?
A. Restrictive lung disease
B. Airflow limitation that is not fully reversible
C. Increased lung compliance
D. Decreased lung compliance
✅ Correct Answer: B. Airflow limitation that is not fully reversible
💡 Rationale: COPD is characterized by chronic airflow limitation, which is usually
progressive and not fully reversible.
3. In acute pancreatitis, which of the following lab values is typically elevated?
A. Serum amylase
B. Serum creatinine
C. Serum potassium
D. Blood urea nitrogen (BUN)
,✅ Correct Answer: A. Serum amylase
💡 Rationale: Serum amylase levels are often elevated in acute pancreatitis, reflecting
pancreatic inflammation.
4. A patient with cirrhosis may develop which of the following complications?
A. Hyperkalemia
B. Ascites
C. Hyperglycemia
D. Dehydration
✅ Correct Answer: B. Ascites
💡 Rationale: Ascites is a common complication of cirrhosis due to portal hypertension and
decreased albumin production.
5. What is the primary pathophysiological cause of anemia in chronic kidney
disease?
A. Decreased erythropoietin production
B. Increased iron absorption
C. Decreased red blood cell destruction
D. Increased blood volume
✅ Correct Answer: A. Decreased erythropoietin production
💡 Rationale: Chronic kidney disease impairs the production of erythropoietin, leading to
reduced red blood cell production and anemia.
6. Which of the following best describes Type 1 diabetes mellitus?
A. Insulin resistance in the liver and muscle
B. Autoimmune destruction of pancreatic beta cells
C. Increased insulin production in the pancreas
D. Insulin deficiency due to aging
✅ Correct Answer: B. Autoimmune destruction of pancreatic beta cells
💡 Rationale: Type 1 diabetes mellitus is an autoimmune disorder where the body's immune
system destroys the beta cells in the pancreas, leading to insulin deficiency.
, 7. In sickle cell disease, the sickling of red blood cells is primarily due to:
A. An abnormal form of hemoglobin (HbS)
B. Decreased oxygen tension in the blood
C. Increased carbon dioxide levels
D. Hemolysis of red blood cells
✅ Correct Answer: A. An abnormal form of hemoglobin (HbS)
💡 Rationale: Sickle cell disease is caused by the production of an abnormal form of
hemoglobin (HbS), which leads to the sickling of red blood cells, especially under low oxygen
conditions.
8. What is the primary pathophysiological feature of Asthma?
A. Chronic inflammation of the airways
B. Destruction of lung tissue
C. Increased mucus production without inflammation
D. Airway obstruction due to fluid accumulation
✅ Correct Answer: A. Chronic inflammation of the airways
💡 Rationale: Asthma is characterized by chronic inflammation of the airways, leading to
episodic bronchoconstriction and airflow obstruction.
9. Hypertension can cause which of the following long-term complications?
A. Hypoglycemia
B. Left ventricular hypertrophy
C. Increased heart rate
D. Decreased stroke volume
✅ Correct Answer: B. Left ventricular hypertrophy
💡 Rationale: Chronic hypertension can lead to left ventricular hypertrophy as the heart
works harder to pump blood against increased vascular resistance.
10. Which of the following is a common symptom of hyperthyroidism?
A. Cold intolerance
B. Weight gain
C. Tachycardia