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Arteries, veins and capillaries compared

7th grade (Year 8 in England) · 16 questions · Common Core: NGSS.MS-LS1-3 · England: GCSE Combined Science: Organisation, KS3 Biology: Gas exchange systems

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1
Question 1
Blood in the leg veins must travel upwards to the heart. What helps?
- A. valves and squeezing by leg muscles
- B. high pressure from the heart
- C. gravity
- D. capillaries pumping
2
Question 2
Blood vessels: which statement is true?
- A. All arteries carry oxygen-rich blood.
- B. Veins have thicker walls than arteries.
- C. Capillaries have thick walls to protect the blood.
- D. The pulmonary artery carries deoxygenated blood.
3
Question 3
Which type of blood vessel: carries blood back to the heart at low pressure?
- A. artery
- B. vein
- C. capillary
4
Question 4
Blood in the leg veins must travel upwards to the heart. What helps?
- A. gravity
- B. valves and squeezing by leg muscles
- C. capillaries pumping
- D. high pressure from the heart
5
Question 5
Blood vessels: which statement is true?
- A. All arteries carry oxygen-rich blood.
- B. Veins contain valves.
- C. Capillaries have thick walls to protect the blood.
- D. Veins have thicker walls than arteries.
6
Question 6
Which type of blood vessel: wide space inside and thin walls?
- A. artery
- B. vein
- C. capillary
7
Question 7
Blood in the leg veins must travel upwards to the heart. What helps?
- A. valves and squeezing by leg muscles
- B. high pressure from the heart
- C. gravity
- D. capillaries pumping
8
Question 8
Blood vessels: which statement is true?
- A. Veins have thicker walls than arteries.
- B. Capillaries link arteries to veins.
- C. Capillaries have thick walls to protect the blood.
- D. All arteries carry oxygen-rich blood.
9
Question 9
Which type of blood vessel: wide space inside and thin walls?
- A. artery
- B. vein
- C. capillary
10
Question 10
A blood donor has a needle put into a vein, not an artery. Why?
- A. Veins are near the surface and the blood is at low pressure
- B. Veins have thicker walls
- C. Veins carry oxygen-rich blood
- D. Arteries have no blood in them
11
Question 11
Blood vessels: which statement is true?
- A. Capillaries have thick walls to protect the blood.
- B. All arteries carry oxygen-rich blood.
- C. Arteries carry blood away from the heart.
- D. Veins have thicker walls than arteries.
12
Question 12
Which type of blood vessel: walls only one cell thick?
- A. artery
- B. vein
- C. capillary
13
Question 13
Blood in the leg veins must travel upwards to the heart. What helps?
- A. gravity
- B. valves and squeezing by leg muscles
- C. high pressure from the heart
- D. capillaries pumping
14
Question 14
Blood vessels: which statement is true?
- A. Capillaries have thick walls to protect the blood.
- B. Veins have thicker walls than arteries.
- C. All arteries carry oxygen-rich blood.
- D. Capillaries link arteries to veins.
15
Question 15
Which type of blood vessel: wide space inside and thin walls?
- A. artery
- B. vein
- C. capillary
16
Question 16
Why are capillaries so narrow and thin-walled?
- A. to store blood
- B. to stop blood reaching cells
- C. to raise blood pressure
- D. to bring blood very close to cells for quick diffusion

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Answer key: Arteries, veins and capillaries compared

1. A. valves and squeezing by leg muscles
2. D. The pulmonary artery carries deoxygenated blood.
3. B. vein
4. B. valves and squeezing by leg muscles
5. B. Veins contain valves.
6. B. vein
7. A. valves and squeezing by leg muscles
8. B. Capillaries link arteries to veins.
9. B. vein
10. A. Veins are near the surface and the blood is at low pressure
11. C. Arteries carry blood away from the heart.
12. C. capillary
13. B. valves and squeezing by leg muscles
14. D. Capillaries link arteries to veins.
15. B. vein
16. D. to bring blood very close to cells for quick diffusion