NR507 ADVANCED
PATHOPHYSIOLOGY FINAL EXAM
PREP QUESTIONS AND VERIFIED
ANSWERS| 100% CORRECT |GRADE A –
CHAMBERLAIN
1. Which process describes the reduction in cell size due to a decrease in work demand or
adverse environmental conditions?
A. Atrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
Answer: A
Conceptual Explanation: Atrophy is the shrinkage in cell size. If a sufficient number of
cells atrophy, the entire organ shrinks. This is often caused by disuse, denervation, or loss
of endocrine stimulation.
2. In the Renin-Angiotensin-Aldosterone System (RAAS), what is the primary stimulus for the
release of renin by the juxtaglomerular cells?
A. Decreased blood pressure or renal perfusion
,B. Increased serum potassium levels
C. Decreased serum sodium levels in the distal tubule
D. Increased parasympathetic nervous system activity
Answer: A
Conceptual Explanation: Renin is released in response to decreased blood pressure,
decreased renal blood flow, or decreased sodium chloride delivery to the macula densa.
3. A patient presents with a serum sodium of 120 mEq/L and high urine osmolality. Which
condition is most likely responsible?
A. Syndrome of Inappropriate Antidiuretic Hormone (SIADH)
B. Hyperaldosteronism
C. Diabetes Insipidus
D. Hypoparathyroidism
Answer: A
Conceptual Explanation: SIADH results in excessive water retention, leading to dilutional
hyponatremia and concentrated urine (high osmolality) despite the low serum sodium.
4. What is the hallmark physiological characteristic of Heart Failure with Preserved Ejection
Fraction (HFpEF)?
A. Impaired ventricular relaxation and filling
B. Dilated cardiomyopathy
, C. Decreased myocardial contractility
D. Mitral valve regurgitation
Answer: A
Conceptual Explanation: HFpEF, also known as diastolic heart failure, is characterized by
a stiff left ventricle that cannot relax or fill properly, even though the ejection fraction
remains above 50%.
5. Which enzyme deficiency is primarily associated with the development of early-onset
panacinar emphysema, especially in non-smokers?
A. Lactate dehydrogenase
B. Angiotensin-converting enzyme
C. Alpha-1 antitrypsin
D. Alkaline phosphatase
Answer: C
Conceptual Explanation: Alpha-1 antitrypsin (A1AT) inhibits proteases (like elastase)
that break down lung tissue. A deficiency leads to unchecked destruction of alveolar walls.
6. Iron deficiency anemia is characterized by which of the following erythrocyte
morphologies?
A. Macrocytic, normochromic
B. Microcytic, hyperchromic
PATHOPHYSIOLOGY FINAL EXAM
PREP QUESTIONS AND VERIFIED
ANSWERS| 100% CORRECT |GRADE A –
CHAMBERLAIN
1. Which process describes the reduction in cell size due to a decrease in work demand or
adverse environmental conditions?
A. Atrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
Answer: A
Conceptual Explanation: Atrophy is the shrinkage in cell size. If a sufficient number of
cells atrophy, the entire organ shrinks. This is often caused by disuse, denervation, or loss
of endocrine stimulation.
2. In the Renin-Angiotensin-Aldosterone System (RAAS), what is the primary stimulus for the
release of renin by the juxtaglomerular cells?
A. Decreased blood pressure or renal perfusion
,B. Increased serum potassium levels
C. Decreased serum sodium levels in the distal tubule
D. Increased parasympathetic nervous system activity
Answer: A
Conceptual Explanation: Renin is released in response to decreased blood pressure,
decreased renal blood flow, or decreased sodium chloride delivery to the macula densa.
3. A patient presents with a serum sodium of 120 mEq/L and high urine osmolality. Which
condition is most likely responsible?
A. Syndrome of Inappropriate Antidiuretic Hormone (SIADH)
B. Hyperaldosteronism
C. Diabetes Insipidus
D. Hypoparathyroidism
Answer: A
Conceptual Explanation: SIADH results in excessive water retention, leading to dilutional
hyponatremia and concentrated urine (high osmolality) despite the low serum sodium.
4. What is the hallmark physiological characteristic of Heart Failure with Preserved Ejection
Fraction (HFpEF)?
A. Impaired ventricular relaxation and filling
B. Dilated cardiomyopathy
, C. Decreased myocardial contractility
D. Mitral valve regurgitation
Answer: A
Conceptual Explanation: HFpEF, also known as diastolic heart failure, is characterized by
a stiff left ventricle that cannot relax or fill properly, even though the ejection fraction
remains above 50%.
5. Which enzyme deficiency is primarily associated with the development of early-onset
panacinar emphysema, especially in non-smokers?
A. Lactate dehydrogenase
B. Angiotensin-converting enzyme
C. Alpha-1 antitrypsin
D. Alkaline phosphatase
Answer: C
Conceptual Explanation: Alpha-1 antitrypsin (A1AT) inhibits proteases (like elastase)
that break down lung tissue. A deficiency leads to unchecked destruction of alveolar walls.
6. Iron deficiency anemia is characterized by which of the following erythrocyte
morphologies?
A. Macrocytic, normochromic
B. Microcytic, hyperchromic
