NURS 5220 EXAM 1: ADVANCED
PATHOPHYSIOLOGY AND
PHARMACOLOGY COMPREHENSIVE
QUESTIONS & VERIFIED ANSWERS (A+
GUARANTEE)
1. Which cellular adaptation involves the replacement of one mature cell type by another,
less differentiated cell type?
A. Metaplasia
B. Hypertrophy
C. Atrophy
D. Dysplasia
Answer: A
Conceptual Explanation: Metaplasia is a reversible conversion from one adult cell type to
another, often in response to chronic irritation.
2. In the context of cellular injury, what is the primary mechanism by which reactive oxygen
species (ROS) cause damage?
A. Lipid peroxidation of membranes
B. Direct inhibition of ATP synthesis
,C. Activation of lysosomal enzymes
D. Intracellular alkalinization
Answer: A
Conceptual Explanation: ROS cause damage via lipid peroxidation, protein modification,
and DNA breakage.
3. A patient presents with severe muscle weakness and an ECG showing flattened T waves
and prominent U waves. Which electrolyte imbalance is most likely?
A. Hyperkalemia
B. Hyponatremia
C. Hypernatremia
D. Hypokalemia
Answer: D
Conceptual Explanation: Hypokalemia typically presents with muscle weakness and
characteristic ECG changes like flattened T waves and U waves.
4. Which type of hypersensitivity reaction is mediated by IgE and involves the release of
histamine from mast cells?
A. Type I
B. Type II
C. Type III
, D. Type IV
Answer: A
Conceptual Explanation: Type I hypersensitivity is immediate, IgE-mediated, and involves
mast cell degranulation.
5. What is the primary physiological trigger for the release of Renin from the juxtaglomerular
apparatus?
A. Decreased renal perfusion pressure
B. Elevated blood pressure
C. High sodium concentration in the distal tubule
D. Parasympathetic nervous system activation
Answer: A
Conceptual Explanation: Renin release is triggered by decreased perfusion pressure,
sympathetic stimulation, or low sodium delivery to the macula densa.
6. Which characteristic is a hallmark of malignant tumors rather than benign tumors?
A. Slow growth rate
B. Ability to metastasize
C. High degree of differentiation
D. Well-defined capsule
PATHOPHYSIOLOGY AND
PHARMACOLOGY COMPREHENSIVE
QUESTIONS & VERIFIED ANSWERS (A+
GUARANTEE)
1. Which cellular adaptation involves the replacement of one mature cell type by another,
less differentiated cell type?
A. Metaplasia
B. Hypertrophy
C. Atrophy
D. Dysplasia
Answer: A
Conceptual Explanation: Metaplasia is a reversible conversion from one adult cell type to
another, often in response to chronic irritation.
2. In the context of cellular injury, what is the primary mechanism by which reactive oxygen
species (ROS) cause damage?
A. Lipid peroxidation of membranes
B. Direct inhibition of ATP synthesis
,C. Activation of lysosomal enzymes
D. Intracellular alkalinization
Answer: A
Conceptual Explanation: ROS cause damage via lipid peroxidation, protein modification,
and DNA breakage.
3. A patient presents with severe muscle weakness and an ECG showing flattened T waves
and prominent U waves. Which electrolyte imbalance is most likely?
A. Hyperkalemia
B. Hyponatremia
C. Hypernatremia
D. Hypokalemia
Answer: D
Conceptual Explanation: Hypokalemia typically presents with muscle weakness and
characteristic ECG changes like flattened T waves and U waves.
4. Which type of hypersensitivity reaction is mediated by IgE and involves the release of
histamine from mast cells?
A. Type I
B. Type II
C. Type III
, D. Type IV
Answer: A
Conceptual Explanation: Type I hypersensitivity is immediate, IgE-mediated, and involves
mast cell degranulation.
5. What is the primary physiological trigger for the release of Renin from the juxtaglomerular
apparatus?
A. Decreased renal perfusion pressure
B. Elevated blood pressure
C. High sodium concentration in the distal tubule
D. Parasympathetic nervous system activation
Answer: A
Conceptual Explanation: Renin release is triggered by decreased perfusion pressure,
sympathetic stimulation, or low sodium delivery to the macula densa.
6. Which characteristic is a hallmark of malignant tumors rather than benign tumors?
A. Slow growth rate
B. Ability to metastasize
C. High degree of differentiation
D. Well-defined capsule
