COMSAE ASA 113 Practice
Exam LATEST UPDATE
2026 WITH QUALITY
QUESTIONS AND
ANSWERS.
1. Which structure is primarily responsible for oxygen exchange in the lungs?
A. Bronchi
B. Trachea
C. Alveoli
D. Pleura
Answer: C. Alveoli
Rationale: Alveoli provide a thin membrane where oxygen diffuses into pulmonary capillaries
while carbon dioxide diffuses into the alveolar air.
2. Normal adult resting heart rate is:
A. 30–50 bpm
B. 60–100 bpm
C. 100–140 bpm
D. 140–180 bpm
Answer: B. 60–100 bpm
Rationale: A resting heart rate between 60 and 100 beats per minute is considered normal in
healthy adults.
3. Which electrolyte abnormality is most commonly associated with cardiac
dysrhythmias?
Exam LATEST UPDATE
2026 WITH QUALITY
QUESTIONS AND
ANSWERS.
1. Which structure is primarily responsible for oxygen exchange in the lungs?
A. Bronchi
B. Trachea
C. Alveoli
D. Pleura
Answer: C. Alveoli
Rationale: Alveoli provide a thin membrane where oxygen diffuses into pulmonary capillaries
while carbon dioxide diffuses into the alveolar air.
2. Normal adult resting heart rate is:
A. 30–50 bpm
B. 60–100 bpm
C. 100–140 bpm
D. 140–180 bpm
Answer: B. 60–100 bpm
Rationale: A resting heart rate between 60 and 100 beats per minute is considered normal in
healthy adults.
3. Which electrolyte abnormality is most commonly associated with cardiac
dysrhythmias?
