WGU D027 ADVANCED
PATHOPHARMACOLOGICAL
FOUNDATIONS PRACTICE EXAM
QUESTIONS AND ANSWERS
1. A patient exhibits a decrease in muscle size after a long period of immobilization. Which
cellular adaptation is this describing?
A. Hypertrophy
B. Metaplasia
C. Atrophy
D. Dysplasia
Answer: C
Conceptual Explanation: Atrophy is a decrease in cellular size, often resulting from
disuse, denervation, or lack of endocrine stimulation.
2. Which process leads to the replacement of one mature cell type by another, often as a
response to chronic irritation?
A. Metaplasia
,B. Hyperplasia
C. Anaplasia
D. Neoplasia
Answer: A
Conceptual Explanation: Metaplasia is the reversible replacement of one mature cell type
by another, such as the change in bronchial lining in smokers.
3. What is the primary mechanism of cellular injury caused by free radicals?
A. Protein synthesis inhibition
B. Lactic acid accumulation
C. Oxidative stress leading to membrane damage
D. Calcium influx into the mitochondria
Answer: C
Conceptual Explanation: Free radicals cause oxidative stress, which leads to lipid
peroxidation, protein alteration, and DNA damage.
4. In the Renin-Angiotensin-Aldosterone System (RAAS), what is the direct effect of
Angiotensin II?
A. Vasodilation and sodium excretion
B. Decreased heart rate and cardiac output
, C. Vasoconstriction and stimulation of aldosterone release
D. Inhibition of Antidiuretic Hormone (ADH)
Answer: C
Conceptual Explanation: Angiotensin II is a potent vasoconstrictor and stimulates the
adrenal cortex to release aldosterone, which increases sodium and water retention.
5. Which electrolyte imbalance is most commonly associated with Trousseau’s sign and
Chvostek’s sign?
A. Hyperkalemia
B. Hypomagnesemia
C. Hypocalcemia
D. Hypernatremia
Answer: C
Conceptual Explanation: Hypocalcemia increases neuromuscular excitability, leading to
tetany, which is clinically assessed via Trousseau and Chvostek signs.
6. A patient presents with metabolic acidosis. How will the respiratory system attempt to
compensate?
A. By decreasing respiratory rate to retain CO2
B. The respiratory system does not compensate for metabolic issues
C. By decreasing tidal volume
PATHOPHARMACOLOGICAL
FOUNDATIONS PRACTICE EXAM
QUESTIONS AND ANSWERS
1. A patient exhibits a decrease in muscle size after a long period of immobilization. Which
cellular adaptation is this describing?
A. Hypertrophy
B. Metaplasia
C. Atrophy
D. Dysplasia
Answer: C
Conceptual Explanation: Atrophy is a decrease in cellular size, often resulting from
disuse, denervation, or lack of endocrine stimulation.
2. Which process leads to the replacement of one mature cell type by another, often as a
response to chronic irritation?
A. Metaplasia
,B. Hyperplasia
C. Anaplasia
D. Neoplasia
Answer: A
Conceptual Explanation: Metaplasia is the reversible replacement of one mature cell type
by another, such as the change in bronchial lining in smokers.
3. What is the primary mechanism of cellular injury caused by free radicals?
A. Protein synthesis inhibition
B. Lactic acid accumulation
C. Oxidative stress leading to membrane damage
D. Calcium influx into the mitochondria
Answer: C
Conceptual Explanation: Free radicals cause oxidative stress, which leads to lipid
peroxidation, protein alteration, and DNA damage.
4. In the Renin-Angiotensin-Aldosterone System (RAAS), what is the direct effect of
Angiotensin II?
A. Vasodilation and sodium excretion
B. Decreased heart rate and cardiac output
, C. Vasoconstriction and stimulation of aldosterone release
D. Inhibition of Antidiuretic Hormone (ADH)
Answer: C
Conceptual Explanation: Angiotensin II is a potent vasoconstrictor and stimulates the
adrenal cortex to release aldosterone, which increases sodium and water retention.
5. Which electrolyte imbalance is most commonly associated with Trousseau’s sign and
Chvostek’s sign?
A. Hyperkalemia
B. Hypomagnesemia
C. Hypocalcemia
D. Hypernatremia
Answer: C
Conceptual Explanation: Hypocalcemia increases neuromuscular excitability, leading to
tetany, which is clinically assessed via Trousseau and Chvostek signs.
6. A patient presents with metabolic acidosis. How will the respiratory system attempt to
compensate?
A. By decreasing respiratory rate to retain CO2
B. The respiratory system does not compensate for metabolic issues
C. By decreasing tidal volume
