PU M 2026 Gas Exchange Free Quiz 1

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PU M 2026 Gas Exchange Free Quiz 1

PU M Quiz

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Remaining: 10

Navigator 10 Q

General

General 10 MCQs

1. What is gas exchange?

A. Oxygen uptake and carbon dioxide release B. Energy release from food C. Breathing D. Cellular respiration

2. What structures are part of the human respiratory system?

A. Lungs only B. Nose, pharynx, larynx, trachea, bronchi, bronchioles, lungs C. Trachea only D. Nose only

3. Which tube connects the larynx to the bronchi?

A. Esophagus B. Pharynx C. Trachea D. Larynx

4. Where does gas exchange occur in the lungs?

A. Alveoli B. Bronchioles C. Bronchi D. Trachea

5. What is the direction of gas exchange in the alveoli?

A. CO₂ into blood, O₂ into alveoli B. O₂ into blood, CO₂ into alveoli C. Both O₂ and CO₂ into blood D. Neither

6. Which muscle is primarily responsible for breathing?

A. Intercostal muscles B. Abdominal muscles C. Diaphragm D. Back muscles

7. Which muscles are located between the ribs?

A. Diaphragm B. Abdominal muscles C. Back muscles D. Intercostal muscles

8. What is the process of taking air into the lungs called?

A. Inhalation B. Exhalation C. Breathing D. Respiration

9. What is the process of releasing air from the lungs called?

A. Inhalation B. Exhalation C. Breathing D. Respiration

10. What happens during exhalation?

A. Diaphragm contracts B. No movement C. Chest volume increases D. Diaphragm relaxes and moves upward

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