NURS 611 Advanced Pathophysiology Week 5 Quiz 2026 |Maryville
1. Which of the following is the primary mechanism behind the formation of
foam cells in atherosclerosis?
A. Macrophages engulfing oxidized LDL cholesterol within the intima
B. Neutrophil infiltration into the tunica media
C. Smooth muscle cell apoptosis in the adventitia
D. Platelet aggregation on the surface of healthy endothelium
Answer: A
Rationale: Foam cells are formed when macrophages migrate into the arterial intima and
ingest oxidized low-density lipoprotein (LDL) cholesterol, creating the fatty streaks
characteristic of early atherosclerosis.
2. In the renin-angiotensin-aldosterone system (RAAS), which enzyme is
responsible for converting Angiotensin I to Angiotensin II?
A. Renin
B. Angiotensin-converting enzyme (ACE)
C. Aldosterone synthase
D. Antidiuretic hormone
Answer: B
Rationale: ACE, primarily found in the pulmonary capillaries, converts Angiotensin I into
the potent vasoconstrictor Angiotensin II.
,3. Which clinical manifestation is most characteristic of right-sided heart failure
resulting from pulmonary hypertension?
A. Pulmonary edema
B. Peripheral edema and jugular venous distention
C. Orthopnea
D. Paroxysmal nocturnal dyspnea
Answer: B
Rationale: Right-sided heart failure causes blood to back up into the systemic circulation,
leading to peripheral edema, hepatomegaly, and jugular venous distention.
4. A patient with chronic obstructive pulmonary disease (COPD) presents with a
barrel chest. This physical finding is primarily due to:
A. Weakness of the intercostal muscles
B. Chronic inflammation of the pleura
C. Hypertrophy of the diaphragm
D. Hyperinflation of the lungs and air trapping
Answer: D
Rationale: Air trapping and loss of elastic recoil in COPD lead to hyperinflation, which
increases the anterior-posterior diameter of the chest, resulting in a barrel chest.
5. What is the pathophysiological hallmark of Acute Respiratory Distress
Syndrome (ARDS)?
A. Decreased pulmonary capillary permeability
B. Bronchoconstriction mediated by IgE
C. Excessive production of surfactant by Type II pneumocytes
D. Increased alveolar-capillary membrane permeability and non-cardiogenic pulmonary edema
Answer: D
Rationale: ARDS is characterized by widespread inflammation and increased permeability
of the alveolar-capillary membrane, leading to protein-rich fluid leaking into the alveoli.
, 6. Which type of anemia is characterized by macrocytic-normochromic
erythrocytes and is often associated with the absence of intrinsic factor?
A. Iron deficiency anemia
B. Sideroblastic anemia
C. Pernicious anemia
D. Aplastic anemia
Answer: C
Rationale: Pernicious anemia is a macrocytic anemia caused by Vitamin B12 deficiency,
often due to a lack of intrinsic factor required for B12 absorption in the ileum.
7. In chronic kidney disease (CKD), the secondary hyperparathyroidism develops
primarily due to:
A. Hypercalcemia and hypophosphatemia
B. Hypocalcemia and hyperphosphatemia
C. Excessive production of Vitamin D
D. Increased renal excretion of phosphate
Answer: B
Rationale: In CKD, phosphate retention and decreased Vitamin D activation lead to
hypocalcemia, which chronically stimulates the parathyroid glands to release PTH.
8. A 55-year-old male is diagnosed with Prinzmetal (variant) angina. The nurse
understands this condition is caused by:
A. Fixed atherosclerotic plaque obstruction
B. Rupture of an unstable plaque with thrombus formation
C. Increased myocardial oxygen demand during exercise
D. Vasospasm of the coronary arteries
Answer: D
Rationale: Prinzmetal angina is caused by transient vasospasm of a coronary artery, often
occurring at rest and frequently at night.
1. Which of the following is the primary mechanism behind the formation of
foam cells in atherosclerosis?
A. Macrophages engulfing oxidized LDL cholesterol within the intima
B. Neutrophil infiltration into the tunica media
C. Smooth muscle cell apoptosis in the adventitia
D. Platelet aggregation on the surface of healthy endothelium
Answer: A
Rationale: Foam cells are formed when macrophages migrate into the arterial intima and
ingest oxidized low-density lipoprotein (LDL) cholesterol, creating the fatty streaks
characteristic of early atherosclerosis.
2. In the renin-angiotensin-aldosterone system (RAAS), which enzyme is
responsible for converting Angiotensin I to Angiotensin II?
A. Renin
B. Angiotensin-converting enzyme (ACE)
C. Aldosterone synthase
D. Antidiuretic hormone
Answer: B
Rationale: ACE, primarily found in the pulmonary capillaries, converts Angiotensin I into
the potent vasoconstrictor Angiotensin II.
,3. Which clinical manifestation is most characteristic of right-sided heart failure
resulting from pulmonary hypertension?
A. Pulmonary edema
B. Peripheral edema and jugular venous distention
C. Orthopnea
D. Paroxysmal nocturnal dyspnea
Answer: B
Rationale: Right-sided heart failure causes blood to back up into the systemic circulation,
leading to peripheral edema, hepatomegaly, and jugular venous distention.
4. A patient with chronic obstructive pulmonary disease (COPD) presents with a
barrel chest. This physical finding is primarily due to:
A. Weakness of the intercostal muscles
B. Chronic inflammation of the pleura
C. Hypertrophy of the diaphragm
D. Hyperinflation of the lungs and air trapping
Answer: D
Rationale: Air trapping and loss of elastic recoil in COPD lead to hyperinflation, which
increases the anterior-posterior diameter of the chest, resulting in a barrel chest.
5. What is the pathophysiological hallmark of Acute Respiratory Distress
Syndrome (ARDS)?
A. Decreased pulmonary capillary permeability
B. Bronchoconstriction mediated by IgE
C. Excessive production of surfactant by Type II pneumocytes
D. Increased alveolar-capillary membrane permeability and non-cardiogenic pulmonary edema
Answer: D
Rationale: ARDS is characterized by widespread inflammation and increased permeability
of the alveolar-capillary membrane, leading to protein-rich fluid leaking into the alveoli.
, 6. Which type of anemia is characterized by macrocytic-normochromic
erythrocytes and is often associated with the absence of intrinsic factor?
A. Iron deficiency anemia
B. Sideroblastic anemia
C. Pernicious anemia
D. Aplastic anemia
Answer: C
Rationale: Pernicious anemia is a macrocytic anemia caused by Vitamin B12 deficiency,
often due to a lack of intrinsic factor required for B12 absorption in the ileum.
7. In chronic kidney disease (CKD), the secondary hyperparathyroidism develops
primarily due to:
A. Hypercalcemia and hypophosphatemia
B. Hypocalcemia and hyperphosphatemia
C. Excessive production of Vitamin D
D. Increased renal excretion of phosphate
Answer: B
Rationale: In CKD, phosphate retention and decreased Vitamin D activation lead to
hypocalcemia, which chronically stimulates the parathyroid glands to release PTH.
8. A 55-year-old male is diagnosed with Prinzmetal (variant) angina. The nurse
understands this condition is caused by:
A. Fixed atherosclerotic plaque obstruction
B. Rupture of an unstable plaque with thrombus formation
C. Increased myocardial oxygen demand during exercise
D. Vasospasm of the coronary arteries
Answer: D
Rationale: Prinzmetal angina is caused by transient vasospasm of a coronary artery, often
occurring at rest and frequently at night.
