COMSAE Phase 1 Form 116 Practice
Examination Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A| Instant
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1. A 65-year-old man develops crushing substernal chest pain. Occlusion
of which coronary artery most commonly causes an anterior wall
myocardial infarction?
A. Right coronary artery
B. Left circumflex artery
C. Left anterior descending artery
D. Posterior descending artery
Answer: C. Left anterior descending artery
Rationale: The LAD supplies the anterior wall of the left ventricle and
anterior septum. Occlusion commonly results in anterior wall myocardial
infarction.
, 2. A patient with type 1 diabetes mellitus presents with nausea,
vomiting, and Kussmaul respirations. Which acid-base disturbance is
present?
A. Respiratory acidosis
B. Respiratory alkalosis
C. Metabolic alkalosis
D. Metabolic acidosis
Answer: D. Metabolic acidosis
Rationale: Diabetic ketoacidosis produces accumulation of ketoacids,
resulting in high-anion-gap metabolic acidosis.
3. Which neurotransmitter is deficient in Parkinson disease?
A. Acetylcholine
B. Serotonin
C. Dopamine
D. GABA
Answer: C. Dopamine
Rationale: Degeneration of substantia nigra neurons decreases dopamine
levels in the nigrostriatal pathway.
, 4. A child develops a barking cough and inspiratory stridor. What is the
most likely diagnosis?
A. Epiglottitis
B. Bronchiolitis
C. Croup
D. Asthma
Answer: C. Croup
Rationale: Croup is characterized by a barking cough, hoarseness, and
inspiratory stridor due to laryngotracheal inflammation.
5. Which vitamin deficiency causes scurvy?
A. Vitamin A
B. Vitamin D
C. Vitamin K
D. Vitamin C
Answer: D. Vitamin C
Rationale: Vitamin C deficiency impairs collagen synthesis, leading to
bleeding gums and poor wound healing.
6. The primary site of erythropoietin production in adults is the:
, A. Liver
B. Bone marrow
C. Kidney
D. Spleen
Answer: C. Kidney
Rationale: Peritubular interstitial cells of the kidney produce erythropoietin
in response to hypoxia.
7. A patient presents with hypercalcemia and recurrent kidney stones.
Which hormone is most likely elevated?
A. Calcitonin
B. Cortisol
C. Aldosterone
D. Parathyroid hormone
Answer: D. Parathyroid hormone
Rationale: Primary hyperparathyroidism increases calcium reabsorption
and bone resorption, causing hypercalcemia.
8. Which organism most commonly causes peptic ulcer disease?
A. E. coli
B. Staphylococcus aureus
Examination Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A| Instant
Download Pdf
1. A 65-year-old man develops crushing substernal chest pain. Occlusion
of which coronary artery most commonly causes an anterior wall
myocardial infarction?
A. Right coronary artery
B. Left circumflex artery
C. Left anterior descending artery
D. Posterior descending artery
Answer: C. Left anterior descending artery
Rationale: The LAD supplies the anterior wall of the left ventricle and
anterior septum. Occlusion commonly results in anterior wall myocardial
infarction.
, 2. A patient with type 1 diabetes mellitus presents with nausea,
vomiting, and Kussmaul respirations. Which acid-base disturbance is
present?
A. Respiratory acidosis
B. Respiratory alkalosis
C. Metabolic alkalosis
D. Metabolic acidosis
Answer: D. Metabolic acidosis
Rationale: Diabetic ketoacidosis produces accumulation of ketoacids,
resulting in high-anion-gap metabolic acidosis.
3. Which neurotransmitter is deficient in Parkinson disease?
A. Acetylcholine
B. Serotonin
C. Dopamine
D. GABA
Answer: C. Dopamine
Rationale: Degeneration of substantia nigra neurons decreases dopamine
levels in the nigrostriatal pathway.
, 4. A child develops a barking cough and inspiratory stridor. What is the
most likely diagnosis?
A. Epiglottitis
B. Bronchiolitis
C. Croup
D. Asthma
Answer: C. Croup
Rationale: Croup is characterized by a barking cough, hoarseness, and
inspiratory stridor due to laryngotracheal inflammation.
5. Which vitamin deficiency causes scurvy?
A. Vitamin A
B. Vitamin D
C. Vitamin K
D. Vitamin C
Answer: D. Vitamin C
Rationale: Vitamin C deficiency impairs collagen synthesis, leading to
bleeding gums and poor wound healing.
6. The primary site of erythropoietin production in adults is the:
, A. Liver
B. Bone marrow
C. Kidney
D. Spleen
Answer: C. Kidney
Rationale: Peritubular interstitial cells of the kidney produce erythropoietin
in response to hypoxia.
7. A patient presents with hypercalcemia and recurrent kidney stones.
Which hormone is most likely elevated?
A. Calcitonin
B. Cortisol
C. Aldosterone
D. Parathyroid hormone
Answer: D. Parathyroid hormone
Rationale: Primary hyperparathyroidism increases calcium reabsorption
and bone resorption, causing hypercalcemia.
8. Which organism most commonly causes peptic ulcer disease?
A. E. coli
B. Staphylococcus aureus
