A Level Biology – Vessels – Primrose Kitten

A Level Biology – Vessels

Last updated: 18/01/2021

AQA A-Level Biology Mass Transport A Level Biology – Vessels

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Question 1 of 20

1. Question
Name the blood vessel in image A
- Artery
- Vein
- Arteriole
- Capillary
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Question 2 of 20

2. Question
What is the function of arteries?
- Carry blood away from the heart and towards other organs
- Carry blood towards to the heart
- Carry blood away from other organs
- Regulate pressure from other blood vessels
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Question 3 of 20

3. Question
Why do arteries have a thick muscular layer?
- In order to control blood volume
- To allow stretch and recoil
- To prevent bursting
- To avoid oxygenated and deoxygenated blood mixing
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Question 4 of 20

4. Question
Why do arteries have a thick elastic layer?
- To maintain pressure and to allow stretch and recoil
- In order to control blood volume
- To prevent bursting
- To avoid oxygenated and deoxygenated blood mixing
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Question 5 of 20

5. Question
Why do arteries have a thick wall?
- To prevent bursting due to high pressure
- In order to control blood volume
- To allow stretch and recoil
- To avoid oxygenated and deoxygenated blood mixing
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Question 6 of 20

6. Question
What is the name of the blood vessels that restrict blood flow into capillaries?
- Aterioles
- Vein
- Artery
- Capillary
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Question 7 of 20

7. Question
What adaptation do arterioles have to allow this restriction of blood flow?
- Thick muscle layer
- Thin muscle layer
- Valves
- Thick elastic layer
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Question 8 of 20

8. Question
Name the blood vessel in image B
- Vein
- Capillary
- Artery
- Arteriole
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Question 9 of 20

9. Question
What is the function of veins?
- Carry blood towards the heart
- Carry blood away from the heart
- To supply the heart muscle with oxygen
- Carry blood towards other organs
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Question 10 of 20

10. Question
Why do veins have thinner walls, elastic layers and muscle layers than arteries?
- Due to decreased pressure
- Due to increased pressure
- They aren't as long as arteries
- They contain a larger volume of blood
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Question 11 of 20

11. Question
What is another advantage of veins having thin layers?
- Allows flattening to increase blood flow to the heart
- Restricts blood flow to the heart to avoid bursting
- Allows flattening to restrict blood flow to the heart
- Allows veins to be spaced out so blood flow isn’t restricted
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Question 12 of 20

12. Question
What is a unique feature of veins that other blood vessels do not have?
- Valves
- Thick walls
- Thin walls
- Elastic layer
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Question 13 of 20

13. Question
Why do veins have valves?
- To prevent blood flowing backwards
- To prevent blood flowing to the heart
- To prevent blood flow
- To speed up blood flow
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Question 14 of 20

14. Question
Name the blood vessel in image C
- Capillary
- Artery
- Vein
- Arteriole
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Question 15 of 20

15. Question
Which one of these is not an adaptation of capillaries?
- Thick muscle layer
- Wall that is one-cell-thick
- Narrow diameter
- No muscle layer
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Question 16 of 20

16. Question
What is the advantage of capillaries having a narrow diameter?
- "Squashes" red blood cells against capillary walls, decreasing diffusion distance of oxygen
- "Squashes" red blood cells against capillary walls, increasing diffuse distance of oxygen
- Increases surface area to volume ration
- Decreases surface area to volume ratio
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Question 17 of 20

17. Question
What is the advantage of capillaries having a wall that is one cell thick?
- Decreases diffusion distance of oxygen, so more oxygen can be carried to respiring tissues
- Increases diffusion distance of oxygen, so more oxygen can be carried to respiring tissues
- Prevents unwanted substances diffusing into the capillary
- Allows other substances to easily diffuse out of the capillary
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Question 18 of 20

18. Question
What is the name of the structure that is formed by networks of thousands of capillaries?
- Capillary bed
- Capillary network
- Capillary collection
- Capillary mass
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Question 19 of 20

19. Question
What is the main function of capillary beds?
- Gas and nutrient exchange
- Aerobic respiration
- To carry blood towards the heart
- To carry blood away from the heart
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Question 20 of 20

20. Question
What makes capillary beds well adapted to gas and nutrient exchange?
- Large surface area and slow blood flow
- Small surface are and high blood flow
- Large surface area and high blood flow
- Small surface area and slow blood flow
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