NR507 Final Exam: Advanced Pathophysiology Questions and Answers
and Explanations | Latest - Chamberlain
1. Which cellular adaptation process involves the replacement of one mature
cell type by another, often due to chronic irritation?
• A. Metaplasia
• B. Hypertrophy
• C. Atrophy
• D. Dysplasia
Answer: A
Explanation: Metaplasia is the reversible replacement of one mature cell type by another
adult cell type. It is often a response to chronic irritation, such as the change in bronchial
lining in smokers.
2. Which immunoglobulin is primarily involved in Type I hypersensitivity
reactions, such as anaphylaxis or allergic rhinitis?
• A. IgG
• B. IgE
• C. IgM
• D. IgA
Answer: B
,Explanation: IgE binds to mast cells and basophils. When an allergen cross-links these IgE
molecules, it triggers the release of histamine and other mediators associated with Type I
hypersensitivity.
3. In the pathophysiology of iron deficiency anemia, which of the following lab
values is typically decreased?
• A. Total Iron Binding Capacity (TIBC)
• B. Serum Ferritin
• C. Red Cell Distribution Width (RDW)
• D. Transferrin saturation levels (initially)
Answer: B
Explanation: Serum ferritin levels reflect body iron stores and are typically the first to
decrease in the development of iron deficiency anemia.
4. Which clinical manifestation is most characteristic of left-sided heart failure?
• A. Peripheral edema
• B. Pulmonary congestion and crackles
• C. Jugular venous distension
• D. Hepatomegaly
Answer: B
Explanation: Left-sided heart failure leads to a backup of blood into the pulmonary
circulation, causing pulmonary edema, shortness of breath, and crackles in the lungs.
,5. What is the primary underlying pathophysiology of asthma?
• A. Permanent destruction of alveolar walls
• B. Genetic deficiency of alpha-1 antitrypsin
• C. Infection by Streptococcus pneumoniae
• D. Chronic inflammation and airway hyperresponsiveness
Answer: D
Explanation: Asthma is characterized by chronic airway inflammation and
hyperresponsiveness to various stimuli, leading to reversible bronchoconstriction.
6. Which of the following is a hallmark clinical finding of Nephrotic Syndrome?
• A. Heavy proteinuria (>3.5g/24h)
• B. Hematuria with red blood cell casts
• C. Oliguria and azotemia
• D. Normal serum albumin
Answer: A
Explanation: Nephrotic syndrome is defined by massive proteinuria, hypoalbuminemia,
and peripheral edema due to glomerular damage.
7. Grave’s disease is caused by which mechanism?
• A. Thyroid-stimulating immunoglobulins (TSI) mimicking TSH
• B. TSH-secreting pituitary adenoma
• C. Autoimmune destruction of the thyroid gland
, • D. Iodine deficiency
Answer: A
Explanation: Grave’s disease involves Type II hypersensitivity where antibodies (TSI)
stimulate the TSH receptors, causing hyperthyroidism.
8. The pathophysiology of Myasthenia Gravis involves:
• A. Demyelination of central nervous system neurons
• B. Loss of dopamine-producing cells in the substantia nigra
• C. Autoimmune destruction of acetylcholine receptors at the neuromuscular
junction
• D. Increased intracranial pressure due to CSF obstruction
Answer: C
Explanation: Myasthenia Gravis is an autoimmune disorder where antibodies block or
destroy acetylcholine receptors, leading to muscle weakness and fatigue.
9. Portal hypertension in cirrhosis most commonly leads to which complication?
• A. Hypoglycemia
• B. Metabolic Alkalosis
• C. Esophageal varices
• D. Increased vitamin K absorption
Answer: C
and Explanations | Latest - Chamberlain
1. Which cellular adaptation process involves the replacement of one mature
cell type by another, often due to chronic irritation?
• A. Metaplasia
• B. Hypertrophy
• C. Atrophy
• D. Dysplasia
Answer: A
Explanation: Metaplasia is the reversible replacement of one mature cell type by another
adult cell type. It is often a response to chronic irritation, such as the change in bronchial
lining in smokers.
2. Which immunoglobulin is primarily involved in Type I hypersensitivity
reactions, such as anaphylaxis or allergic rhinitis?
• A. IgG
• B. IgE
• C. IgM
• D. IgA
Answer: B
,Explanation: IgE binds to mast cells and basophils. When an allergen cross-links these IgE
molecules, it triggers the release of histamine and other mediators associated with Type I
hypersensitivity.
3. In the pathophysiology of iron deficiency anemia, which of the following lab
values is typically decreased?
• A. Total Iron Binding Capacity (TIBC)
• B. Serum Ferritin
• C. Red Cell Distribution Width (RDW)
• D. Transferrin saturation levels (initially)
Answer: B
Explanation: Serum ferritin levels reflect body iron stores and are typically the first to
decrease in the development of iron deficiency anemia.
4. Which clinical manifestation is most characteristic of left-sided heart failure?
• A. Peripheral edema
• B. Pulmonary congestion and crackles
• C. Jugular venous distension
• D. Hepatomegaly
Answer: B
Explanation: Left-sided heart failure leads to a backup of blood into the pulmonary
circulation, causing pulmonary edema, shortness of breath, and crackles in the lungs.
,5. What is the primary underlying pathophysiology of asthma?
• A. Permanent destruction of alveolar walls
• B. Genetic deficiency of alpha-1 antitrypsin
• C. Infection by Streptococcus pneumoniae
• D. Chronic inflammation and airway hyperresponsiveness
Answer: D
Explanation: Asthma is characterized by chronic airway inflammation and
hyperresponsiveness to various stimuli, leading to reversible bronchoconstriction.
6. Which of the following is a hallmark clinical finding of Nephrotic Syndrome?
• A. Heavy proteinuria (>3.5g/24h)
• B. Hematuria with red blood cell casts
• C. Oliguria and azotemia
• D. Normal serum albumin
Answer: A
Explanation: Nephrotic syndrome is defined by massive proteinuria, hypoalbuminemia,
and peripheral edema due to glomerular damage.
7. Grave’s disease is caused by which mechanism?
• A. Thyroid-stimulating immunoglobulins (TSI) mimicking TSH
• B. TSH-secreting pituitary adenoma
• C. Autoimmune destruction of the thyroid gland
, • D. Iodine deficiency
Answer: A
Explanation: Grave’s disease involves Type II hypersensitivity where antibodies (TSI)
stimulate the TSH receptors, causing hyperthyroidism.
8. The pathophysiology of Myasthenia Gravis involves:
• A. Demyelination of central nervous system neurons
• B. Loss of dopamine-producing cells in the substantia nigra
• C. Autoimmune destruction of acetylcholine receptors at the neuromuscular
junction
• D. Increased intracranial pressure due to CSF obstruction
Answer: C
Explanation: Myasthenia Gravis is an autoimmune disorder where antibodies block or
destroy acetylcholine receptors, leading to muscle weakness and fatigue.
9. Portal hypertension in cirrhosis most commonly leads to which complication?
• A. Hypoglycemia
• B. Metabolic Alkalosis
• C. Esophageal varices
• D. Increased vitamin K absorption
Answer: C
