Lesson 3.3.4.1.1

3.3.4.1.1 Circulatory system, arteries, veins and capillaries Quiz: AQA Biology, Unit 3

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 3.3.4.1.1, Circulatory system, arteries, veins and capillaries: 20 multiple choice questions for the AQA Biology (7402), Unit 3: Organisms exchange substances with their environment, written with Revision Ninja.

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The 20 questions

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

    • The vena cava
    • The pulmonary artery
    • The aorta
    • The pulmonary vein

  2. Which blood vessel carries oxygenated blood from the lungs to the left atrium?

    • The pulmonary artery
    • The vena cava
    • The coronary artery
    • The pulmonary vein

  3. Which blood vessels supply oxygenated blood directly to the heart muscle?

    • Carotid arteries
    • Pulmonary arteries
    • Renal arteries
    • Coronary arteries

  4. Which structural feature helps arteries withstand high blood pressure?

    • Valves in lumen
    • Thin muscular wall
    • Wide central lumen
    • Thick elastic wall

  5. What is the primary function of valves in veins?

    • Increase pressure
    • Facilitate gas exchange
    • Reduce friction
    • Prevent backflow

  6. Which feature of capillaries provides a short diffusion distance for exchange?

    • Semilunar valves
    • One cell thick
    • Thick elastic layer
    • Wide muscle layer

  7. Which force drives the formation of tissue fluid at the arteriole end of capillaries?

    • Active transport
    • High hydrostatic pressure
    • Low blood pressure
    • High oncotic pressure

  8. What main force causes tissue fluid reabsorption at the venous end of capillaries?

    • Gravity
    • High hydrostatic pressure
    • Lower water potential
    • Active uptake

  9. Which blood vessel type has the largest total cross-sectional area in the circulatory system?

    • Aorta
    • Capillaries
    • Arteries
    • Veins

  10. Which structures prevent the backflow of blood within the heart?

    • Elastic fibres
    • Heart valves
    • Coronary arteries
    • Capillary walls

  11. Which valves open during ventricular systole in the cardiac cycle?

    • Atrioventricular valves
    • Venous valves
    • Bicuspid valves
    • Semilunar valves

  12. Which stage of the cardiac cycle causes ventricular pressure to rapidly exceed aortic pressure?

    • Atrial systole
    • Ventricular systole
    • Atrial diastole
    • Cardiac diastole

  13. What causes blood pressure to fall progressively along capillary networks?

    • Valve closure
    • Active transport
    • Friction with walls
    • Muscle contraction

  14. Which blood vessels experience the lowest hydrostatic pressure in the systemic circulation?

    • Veins
    • Arteries
    • Arterioles
    • Capillaries

  15. Which chamber of the heart receives oxygenated blood from the pulmonary veins?

    • The right ventricle
    • The left ventricle
    • The left atrium
    • The right atrium

  16. Which blood vessel returns deoxygenated blood from the upper body to the heart?

    • Pulmonary artery
    • Superior vena cava
    • Inferior vena cava
    • Pulmonary vein

  17. A person has a stroke volume of 70 cm^3 and a heart rate of 75 beats per minute. What is their cardiac output?

    • 1050 cm^3 per minute
    • 525 cm^3 per minute
    • 5250 cm^3 per minute
    • 52.5 cm^3 per minute

  18. What occurs during atrial systole in the cardiac cycle?

    • Semilunar valves open
    • Ventricles contract
    • Atria relax
    • Atria contract

  19. Where does tissue fluid that is not reabsorbed into capillaries drain?

    • Arterial system
    • Coronary system
    • Renal tubules
    • Lymphatic system

  20. What is the main function of elastic recoil in large arteries?

    • Increase heart rate
    • Absorb oxygen
    • Prevent backflow
    • Maintain blood pressure

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