NR507 ADVANCED
PATHOPHYSIOLOGY EXAM
COMPREHENSIVE STUDY GUIDE
QUESTIONS AND VERIFIED ANSWERS |
100% CORRECT | GRADE A+
1. A patient is found to have a replacement of one mature cell type by another less mature
cell type in the uterine cervix. This cellular adaptation is known as:
A. Metaplasia
B. Atrophy
C. Hyperplasia
D. Dysplasia
Answer: A
Conceptual Explanation: Metaplasia is the reversible replacement of one mature cell type
by another, often less differentiated, cell type in response to chronic irritation.
2. Which of the following describes the mechanism of Type I hypersensitivity reactions?
A. Immune complex deposition in tissues
B. IgE binding to mast cells and releasing histamine
C. Cytotoxic T-cell mediated destruction
,D. IgG or IgM antibodies attacking surface antigens
Answer: B
Conceptual Explanation: Type I hypersensitivity is IgE-mediated, where allergen
exposure triggers IgE binding to mast cells, leading to degranulation and histamine release.
3. In the Renin-Angiotensin-Aldosterone System (RAAS), what is the primary function of
Angiotensin II?
A. Peripheral vasodilation
B. Stimulation of ADH secretion
C. Systemic vasoconstriction and aldosterone release
D. Excretion of sodium by the kidneys
Answer: C
Conceptual Explanation: Angiotensin II is a potent vasoconstrictor that increases blood
pressure and stimulates the adrenal cortex to secrete aldosterone for sodium retention.
4. A patient with chronic renal failure presents with a low hemoglobin level. Which deficiency
is most likely responsible?
A. Iron deficiency
B. Vitamin B12 deficiency
C. Erythropoietin deficiency
D. Folic acid deficiency
, Answer: C
Conceptual Explanation: The kidneys produce erythropoietin; in chronic renal failure,
decreased production leads to decreased red blood cell synthesis.
5. Which electrolyte imbalance is characterized by the presence of U waves on an EKG?
A. Hypokalemia
B. Hypocalcemia
C. Hypernatremia
D. Hyperkalemia
Answer: A
Conceptual Explanation: Hypokalemia (low potassium) typically presents with flattened
T waves and the emergence of U waves on an EKG.
6. Which pathophysiological process occurs in Multiple Sclerosis?
A. Depletion of dopamine in the basal ganglia
B. Accumulation of amyloid-beta plaques
C. Degeneration of lower motor neurons
D. Demyelination of central nervous system axons
Answer: D
PATHOPHYSIOLOGY EXAM
COMPREHENSIVE STUDY GUIDE
QUESTIONS AND VERIFIED ANSWERS |
100% CORRECT | GRADE A+
1. A patient is found to have a replacement of one mature cell type by another less mature
cell type in the uterine cervix. This cellular adaptation is known as:
A. Metaplasia
B. Atrophy
C. Hyperplasia
D. Dysplasia
Answer: A
Conceptual Explanation: Metaplasia is the reversible replacement of one mature cell type
by another, often less differentiated, cell type in response to chronic irritation.
2. Which of the following describes the mechanism of Type I hypersensitivity reactions?
A. Immune complex deposition in tissues
B. IgE binding to mast cells and releasing histamine
C. Cytotoxic T-cell mediated destruction
,D. IgG or IgM antibodies attacking surface antigens
Answer: B
Conceptual Explanation: Type I hypersensitivity is IgE-mediated, where allergen
exposure triggers IgE binding to mast cells, leading to degranulation and histamine release.
3. In the Renin-Angiotensin-Aldosterone System (RAAS), what is the primary function of
Angiotensin II?
A. Peripheral vasodilation
B. Stimulation of ADH secretion
C. Systemic vasoconstriction and aldosterone release
D. Excretion of sodium by the kidneys
Answer: C
Conceptual Explanation: Angiotensin II is a potent vasoconstrictor that increases blood
pressure and stimulates the adrenal cortex to secrete aldosterone for sodium retention.
4. A patient with chronic renal failure presents with a low hemoglobin level. Which deficiency
is most likely responsible?
A. Iron deficiency
B. Vitamin B12 deficiency
C. Erythropoietin deficiency
D. Folic acid deficiency
, Answer: C
Conceptual Explanation: The kidneys produce erythropoietin; in chronic renal failure,
decreased production leads to decreased red blood cell synthesis.
5. Which electrolyte imbalance is characterized by the presence of U waves on an EKG?
A. Hypokalemia
B. Hypocalcemia
C. Hypernatremia
D. Hyperkalemia
Answer: A
Conceptual Explanation: Hypokalemia (low potassium) typically presents with flattened
T waves and the emergence of U waves on an EKG.
6. Which pathophysiological process occurs in Multiple Sclerosis?
A. Depletion of dopamine in the basal ganglia
B. Accumulation of amyloid-beta plaques
C. Degeneration of lower motor neurons
D. Demyelination of central nervous system axons
Answer: D
