Biology- Blood vessels

Questions about blood vessels

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Do arteries carry blood to the heart or away from the heart?
Away from the heart
1 of 8
Why do arteries need thick walls?
They have to carry blood that is being pumped at a high speed to go to the rest of the body. Therefore, they have to have thick walls to withstand the high pressure.
2 of 8
Why do veins have valves?
To prevent the back-flow of blood.
3 of 8
Why do capillaries have thin walls?
So that there isn't far for the gases to diffuse across.
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Which type of blood vessel carries oxygen and food close to the cells?
Capillaries
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Which type of blood vessel returns blood to the heart?
Veins
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What is the name of the largest artery in the body?
The aorta.
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What is the name of the largest vein?
The vena cava.
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Other cards in this set

Card 2

Front

Why do arteries need thick walls?

Back

They have to carry blood that is being pumped at a high speed to go to the rest of the body. Therefore, they have to have thick walls to withstand the high pressure.

Card 3

Front

Why do veins have valves?

Back

Preview of the front of card 3

Card 4

Front

Why do capillaries have thin walls?

Back

Preview of the front of card 4

Card 5

Front

Which type of blood vessel carries oxygen and food close to the cells?

Back

Preview of the front of card 5
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