NR 507 ADVANCED
PATHOPHYSIOLOGY FINAL EXAM
PREP QUESTIONS & ANSWERS
(CHAMBERLAIN) 100% GUARANTEE
PASS
1. In the Renin-Angiotensin-Aldosterone System (RAAS), which cell type is primarily
responsible for the secretion of renin in response to decreased renal perfusion?
A. Macula densa cells
B. Podocytes
C. Mesangial cells
D. Juxtaglomerular cells
Answer: D
Conceptual Explanation: Juxtaglomerular cells are specialized smooth muscle cells in the
afferent arteriole that act as baroreceptors and secrete renin when renal blood pressure
drops.
2. Which mechanism best explains the development of pulmonary edema in a patient with
left-sided heart failure?
A. Increased capillary oncotic pressure
,B. Decreased capillary permeability
C. Decreased lymphatic drainage
D. Increased pulmonary capillary hydrostatic pressure
Answer: D
Conceptual Explanation: Left-sided heart failure causes blood to back up into the
pulmonary circulation, increasing hydrostatic pressure, which forces fluid out of the
capillaries into the interstitial space and alveoli.
3. A patient with Chronic Obstructive Pulmonary Disease (COPD) has a genetic deficiency in
alpha-1 antitrypsin. What is the primary role of this enzyme in the lungs?
A. Promoting bronchial smooth muscle relaxation
B. Increasing surfactant production
C. Inhibiting neutrophil elastase from breaking down elastin
D. Stimulating mucociliary clearance
Answer: C
Conceptual Explanation: Alpha-1 antitrypsin protects the lung parenchyma by inhibiting
neutrophil elastase. Deficiency leads to unchecked destruction of elastic fibers, resulting in
panacinar emphysema.
, 4. Which laboratory finding is most characteristic of secondary hyperparathyroidism in a
patient with Chronic Kidney Disease (CKD)?
A. Hypocalcemia and hyperphosphatemia
B. Hypercalcemia and hypophosphatemia
C. Low levels of Vitamin D and low PTH
D. Hypomagnesemia and metabolic alkalosis
Answer: A
Conceptual Explanation: In CKD, phosphorus retention and decreased synthesis of 1,25-
dihydroxyvitamin D lead to hypocalcemia, which chronically stimulates the parathyroid
glands to secrete PTH.
5. Which of the following describes the pathophysiology of Type 1 Diabetes Mellitus?
A. Autoimmune destruction of pancreatic beta cells
B. Insulin resistance in peripheral tissues
C. Excessive glucagon secretion by alpha cells
D. Hyperplasia of the Islets of Langerhans
Answer: A
Conceptual Explanation: Type 1 DM is an autoimmune disease where T-cells and
antibodies destroy insulin-producing beta cells, leading to absolute insulin deficiency.
PATHOPHYSIOLOGY FINAL EXAM
PREP QUESTIONS & ANSWERS
(CHAMBERLAIN) 100% GUARANTEE
PASS
1. In the Renin-Angiotensin-Aldosterone System (RAAS), which cell type is primarily
responsible for the secretion of renin in response to decreased renal perfusion?
A. Macula densa cells
B. Podocytes
C. Mesangial cells
D. Juxtaglomerular cells
Answer: D
Conceptual Explanation: Juxtaglomerular cells are specialized smooth muscle cells in the
afferent arteriole that act as baroreceptors and secrete renin when renal blood pressure
drops.
2. Which mechanism best explains the development of pulmonary edema in a patient with
left-sided heart failure?
A. Increased capillary oncotic pressure
,B. Decreased capillary permeability
C. Decreased lymphatic drainage
D. Increased pulmonary capillary hydrostatic pressure
Answer: D
Conceptual Explanation: Left-sided heart failure causes blood to back up into the
pulmonary circulation, increasing hydrostatic pressure, which forces fluid out of the
capillaries into the interstitial space and alveoli.
3. A patient with Chronic Obstructive Pulmonary Disease (COPD) has a genetic deficiency in
alpha-1 antitrypsin. What is the primary role of this enzyme in the lungs?
A. Promoting bronchial smooth muscle relaxation
B. Increasing surfactant production
C. Inhibiting neutrophil elastase from breaking down elastin
D. Stimulating mucociliary clearance
Answer: C
Conceptual Explanation: Alpha-1 antitrypsin protects the lung parenchyma by inhibiting
neutrophil elastase. Deficiency leads to unchecked destruction of elastic fibers, resulting in
panacinar emphysema.
, 4. Which laboratory finding is most characteristic of secondary hyperparathyroidism in a
patient with Chronic Kidney Disease (CKD)?
A. Hypocalcemia and hyperphosphatemia
B. Hypercalcemia and hypophosphatemia
C. Low levels of Vitamin D and low PTH
D. Hypomagnesemia and metabolic alkalosis
Answer: A
Conceptual Explanation: In CKD, phosphorus retention and decreased synthesis of 1,25-
dihydroxyvitamin D lead to hypocalcemia, which chronically stimulates the parathyroid
glands to secrete PTH.
5. Which of the following describes the pathophysiology of Type 1 Diabetes Mellitus?
A. Autoimmune destruction of pancreatic beta cells
B. Insulin resistance in peripheral tissues
C. Excessive glucagon secretion by alpha cells
D. Hyperplasia of the Islets of Langerhans
Answer: A
Conceptual Explanation: Type 1 DM is an autoimmune disease where T-cells and
antibodies destroy insulin-producing beta cells, leading to absolute insulin deficiency.
