NR507 ADVANCED
PATHOPHYSIOLOGY FINAL EXAM
QUESTIONS AND ANSWERS 2026
1. A patient presents with persistent hypertension, palpitations, and diaphoresis. Lab tests
reveal elevated urinary catecholamines. Which of the following is the most likely
pathophysiological cause?
A. Excessive secretion of cortisol from the adrenal cortex
B. Chronic stimulation of the parasympathetic nervous system
C. Hyperaldosteronism causing sodium retention
D. A catecholamine-secreting tumor of the adrenal medulla
Answer: D
Conceptual Explanation: Pheochromocytoma is a tumor of the adrenal medulla that
secretes excessive catecholamines (epinephrine and norepinephrine), leading to the classic
triad of headache, sweating, and palpitations.
2. In the development of atherosclerosis, what is the initial event in the formation of a fatty
streak?
A. Smooth muscle cell proliferation
,B. Platelet aggregation at the site of injury
C. Endothelial cell injury and inflammation
D. Fibrous plaque rupture
Answer: C
Conceptual Explanation: The process of atherosclerosis begins with endothelial injury,
which allows LDL to enter the tunica intima, leading to inflammation and macrophage
recruitment.
3. Which mechanism best explains the development of edema in a patient with nephrotic
syndrome?
A. Increased capillary hydrostatic pressure
B. Increased capillary permeability to water only
C. Lymphatic obstruction in the lower extremities
D. Decreased plasma oncotic pressure due to albuminuria
Answer: D
Conceptual Explanation: Nephrotic syndrome involves massive proteinuria (specifically
albuminuria). The loss of albumin reduces plasma oncotic pressure, allowing fluid to leak
into the interstitial space.
, 4. A 55-year-old male with chronic alcohol abuse presents with hematemesis and ascites.
Which physiological change is responsible for the development of esophageal varices?
A. Decreased production of clotting factors
B. Increased systemic arterial pressure
C. Direct mucosal irritation from ethanol consumption
D. Portal hypertension causing collateral venous engorgement
Answer: D
Conceptual Explanation: Portal hypertension, often due to liver cirrhosis, forces blood
into collateral vessels like the esophageal veins, which become engorged and prone to
rupture.
5. Which statement correctly describes the pathophysiology of Type 1 Diabetes Mellitus?
A. Increased insulin resistance in peripheral tissues
B. Immune-mediated destruction of pancreatic beta cells
C. Excessive glucagon production by alpha cells
D. Down-regulation of insulin receptors
Answer: B
Conceptual Explanation: Type 1 Diabetes is an autoimmune disease where T-cells attack
and destroy insulin-producing beta cells in the Islets of Langerhans.
PATHOPHYSIOLOGY FINAL EXAM
QUESTIONS AND ANSWERS 2026
1. A patient presents with persistent hypertension, palpitations, and diaphoresis. Lab tests
reveal elevated urinary catecholamines. Which of the following is the most likely
pathophysiological cause?
A. Excessive secretion of cortisol from the adrenal cortex
B. Chronic stimulation of the parasympathetic nervous system
C. Hyperaldosteronism causing sodium retention
D. A catecholamine-secreting tumor of the adrenal medulla
Answer: D
Conceptual Explanation: Pheochromocytoma is a tumor of the adrenal medulla that
secretes excessive catecholamines (epinephrine and norepinephrine), leading to the classic
triad of headache, sweating, and palpitations.
2. In the development of atherosclerosis, what is the initial event in the formation of a fatty
streak?
A. Smooth muscle cell proliferation
,B. Platelet aggregation at the site of injury
C. Endothelial cell injury and inflammation
D. Fibrous plaque rupture
Answer: C
Conceptual Explanation: The process of atherosclerosis begins with endothelial injury,
which allows LDL to enter the tunica intima, leading to inflammation and macrophage
recruitment.
3. Which mechanism best explains the development of edema in a patient with nephrotic
syndrome?
A. Increased capillary hydrostatic pressure
B. Increased capillary permeability to water only
C. Lymphatic obstruction in the lower extremities
D. Decreased plasma oncotic pressure due to albuminuria
Answer: D
Conceptual Explanation: Nephrotic syndrome involves massive proteinuria (specifically
albuminuria). The loss of albumin reduces plasma oncotic pressure, allowing fluid to leak
into the interstitial space.
, 4. A 55-year-old male with chronic alcohol abuse presents with hematemesis and ascites.
Which physiological change is responsible for the development of esophageal varices?
A. Decreased production of clotting factors
B. Increased systemic arterial pressure
C. Direct mucosal irritation from ethanol consumption
D. Portal hypertension causing collateral venous engorgement
Answer: D
Conceptual Explanation: Portal hypertension, often due to liver cirrhosis, forces blood
into collateral vessels like the esophageal veins, which become engorged and prone to
rupture.
5. Which statement correctly describes the pathophysiology of Type 1 Diabetes Mellitus?
A. Increased insulin resistance in peripheral tissues
B. Immune-mediated destruction of pancreatic beta cells
C. Excessive glucagon production by alpha cells
D. Down-regulation of insulin receptors
Answer: B
Conceptual Explanation: Type 1 Diabetes is an autoimmune disease where T-cells attack
and destroy insulin-producing beta cells in the Islets of Langerhans.
