1. Which of the following is the most common cause of ischemic heart
disease?
a) Atherosclerosis
b) Vasculitis
c) Arrhythmias
d) Hypertension
Answer: a) Atherosclerosis
Rationale: Atherosclerosis, the buildup of plaque in the arteries, is the
leading cause of ischemic heart disease. It narrows and hardens the
arteries, reducing blood flow to the heart, leading to conditions like
angina and myocardial infarction.
2. What is the most common cause of chronic obstructive pulmonary
disease (COPD)?
a) Air pollution
b) Genetic mutations
c) Smoking
d) Viral infections
Answer: c) Smoking
Rationale: Smoking is the primary cause of COPD, as it leads to chronic
inflammation in the lungs, damage to the alveoli, and progressive
airflow limitation. Although air pollution and genetic factors contribute,
smoking remains the most significant risk factor.
3. Which of the following is a primary feature of the pathophysiology
of diabetes mellitus type 2?
,a) Autoimmune destruction of pancreatic beta cells
b) Insulin resistance in peripheral tissues
c) Increased insulin secretion by the pancreas
d) Insulin deficiency due to pancreatic atrophy
Answer: b) Insulin resistance in peripheral tissues
Rationale: Type 2 diabetes is characterized by insulin resistance in
peripheral tissues (like muscle and fat), meaning the body’s cells do not
respond to insulin properly. Over time, this leads to impaired glucose
uptake, increased blood sugar, and eventual beta-cell dysfunction.
4. Which of the following is the most common complication of
cirrhosis?
a) Portal hypertension
b) Acute renal failure
c) Gallstones
d) Pancreatitis
Answer: a) Portal hypertension
Rationale: Cirrhosis, the end stage of liver fibrosis, causes scarring that
impedes blood flow through the liver. This leads to increased pressure
in the portal vein, called portal hypertension, which can result in
varices, ascites, and splenomegaly.
5. What is the underlying mechanism of action in the pathogenesis of
rheumatoid arthritis?
a) Bacterial infection triggering immune response
b) Autoimmune attack on synovial joints
, c) Defective insulin signaling
d) Viral infection of the cartilage
Answer: b) Autoimmune attack on synovial joints
Rationale: Rheumatoid arthritis is an autoimmune disease in which the
body’s immune system attacks the synovial lining of the joints. This
leads to chronic inflammation, joint damage, and deformity.
6. Which of the following lab findings is most commonly associated
with acute renal failure (ARF)?
a) Low blood urea nitrogen (BUN)
b) Hyperkalemia
c) Decreased creatinine levels
d) Low uric acid levels
Answer: b) Hyperkalemia
Rationale: In acute renal failure, the kidneys cannot efficiently filter
potassium, leading to hyperkalemia (elevated potassium levels in the
blood), which is a common and potentially life-threatening
complication.
7. In which of the following conditions is the release of
catecholamines responsible for its pathophysiology?
a) Addison’s disease
b) Pheochromocytoma
c) Cushing’s syndrome
d) Hypothyroidism
Answer: b) Pheochromocytoma
Rationale: Pheochromocytoma is a rare adrenal tumor that causes
disease?
a) Atherosclerosis
b) Vasculitis
c) Arrhythmias
d) Hypertension
Answer: a) Atherosclerosis
Rationale: Atherosclerosis, the buildup of plaque in the arteries, is the
leading cause of ischemic heart disease. It narrows and hardens the
arteries, reducing blood flow to the heart, leading to conditions like
angina and myocardial infarction.
2. What is the most common cause of chronic obstructive pulmonary
disease (COPD)?
a) Air pollution
b) Genetic mutations
c) Smoking
d) Viral infections
Answer: c) Smoking
Rationale: Smoking is the primary cause of COPD, as it leads to chronic
inflammation in the lungs, damage to the alveoli, and progressive
airflow limitation. Although air pollution and genetic factors contribute,
smoking remains the most significant risk factor.
3. Which of the following is a primary feature of the pathophysiology
of diabetes mellitus type 2?
,a) Autoimmune destruction of pancreatic beta cells
b) Insulin resistance in peripheral tissues
c) Increased insulin secretion by the pancreas
d) Insulin deficiency due to pancreatic atrophy
Answer: b) Insulin resistance in peripheral tissues
Rationale: Type 2 diabetes is characterized by insulin resistance in
peripheral tissues (like muscle and fat), meaning the body’s cells do not
respond to insulin properly. Over time, this leads to impaired glucose
uptake, increased blood sugar, and eventual beta-cell dysfunction.
4. Which of the following is the most common complication of
cirrhosis?
a) Portal hypertension
b) Acute renal failure
c) Gallstones
d) Pancreatitis
Answer: a) Portal hypertension
Rationale: Cirrhosis, the end stage of liver fibrosis, causes scarring that
impedes blood flow through the liver. This leads to increased pressure
in the portal vein, called portal hypertension, which can result in
varices, ascites, and splenomegaly.
5. What is the underlying mechanism of action in the pathogenesis of
rheumatoid arthritis?
a) Bacterial infection triggering immune response
b) Autoimmune attack on synovial joints
, c) Defective insulin signaling
d) Viral infection of the cartilage
Answer: b) Autoimmune attack on synovial joints
Rationale: Rheumatoid arthritis is an autoimmune disease in which the
body’s immune system attacks the synovial lining of the joints. This
leads to chronic inflammation, joint damage, and deformity.
6. Which of the following lab findings is most commonly associated
with acute renal failure (ARF)?
a) Low blood urea nitrogen (BUN)
b) Hyperkalemia
c) Decreased creatinine levels
d) Low uric acid levels
Answer: b) Hyperkalemia
Rationale: In acute renal failure, the kidneys cannot efficiently filter
potassium, leading to hyperkalemia (elevated potassium levels in the
blood), which is a common and potentially life-threatening
complication.
7. In which of the following conditions is the release of
catecholamines responsible for its pathophysiology?
a) Addison’s disease
b) Pheochromocytoma
c) Cushing’s syndrome
d) Hypothyroidism
Answer: b) Pheochromocytoma
Rationale: Pheochromocytoma is a rare adrenal tumor that causes
