3.1.1.2 The structure and functions of the cardio-respiratory system Quiz: AQA Physical Education, Unit 1

The 20 questions

1. Which is the correct pathway of air into the lungs?

   • Bronchioles to alveoli
   • Trachea to bronchi
   • Bronchi to trachea
   • Alveoli to bronchioles

2. Where does gas exchange take place in the lungs?

   • Bronchioles
   • Bronchi
   • Trachea
   • Alveoli

3. Which structural feature of alveoli maximises gaseous exchange?

   • Thick muscular walls
   • One cell thick
   • Rigid cartilage rings
   • Dry outer surface

4. What combines with oxygen in red blood cells?

   • Haemoglobin
   • Lactic acid
   • Plasma
   • Platelets

5. Besides oxygen, which gas can haemoglobin carry?

   • Carbon dioxide
   • Glucose molecules
   • Nitrogen dioxide
   • Lactic acid

6. Which blood vessels carry blood away from the heart?

   • Bronchioles
   • Capillaries
   • Arteries
   • Veins

7. What is the main function of valves inside veins?

   • Filtering pathogens
   • Increasing blood pressure
   • Preventing backflow
   • Speeding up flow

8. How many chambers does the human heart have?

   • 3
   • 6
   • 2
   • 4

9. Which vessel carries deoxygenated blood from the right ventricle to the lungs?

   • Superior vena cava
   • Pulmonary vein
   • Pulmonary artery
   • Coronary artery

10. Which vessel returns oxygenated blood to the left atrium?

    • Coronary artery
    • Aorta
    • Pulmonary vein
    • Pulmonary artery

11. Which vessel ejects oxygenated blood from the left ventricle to the body?

    • Coronary sinus
    • Pulmonary vein
    • Aorta
    • Pulmonary artery

12. A performer has a stroke volume of 70 ml and a heart rate of 60 bpm. What is cardiac output?

    • 4,200 ml per minute
    • 42 ml per minute
    • 4,900 ml per minute
    • 130 ml per minute

13. Heart rate is 80 bpm and cardiac output is 6,000 ml per minute. What is stroke volume?

    • 75 ml
    • 60 ml
    • 85 ml
    • 480 ml

14. During the cardiac cycle, what does diastole represent?

    • Valve closure
    • Emptying chambers
    • Filling chambers
    • Muscle contraction

15. What causes the heart valves to open during the cardiac cycle?

    • Nerve signals
    • Electrical impulses
    • Muscle tension
    • Blood pressure

16. Deoxygenated blood from the body first enters which chamber of the heart?

    • Left ventricle
    • Right ventricle
    • Left atrium
    • Right atrium

17. What movement does the diaphragm make during resting inhalation?

    • Stays stationary
    • Rotates outward
    • Moves upward
    • Moves downward

18. Which muscles assist deeper inspiration during vigorous exercise?

    • Biceps brachii
    • Gastrocnemius
    • Quadriceps
    • Pectorals

19. Which volume on a spirometer trace is the air breathed in and out during normal breathing?

    • Tidal volume
    • Residual volume
    • Inspiratory reserve volume
    • Expiratory reserve volume

20. Which muscles assist forced expiration during intense physical activity?

    • Abdominals
    • Pectorals
    • Diaphragm
    • Intercostals

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