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Card 6

Front

Do insects have an open or close circulatory system?

Back

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Card 7

Front

Describe the circulatory system in an insect

Back

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Card 8

Front

cntd describe the circulatory syste..

Back

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Card 9

Front

*24 What is the advantage of a double circulatory system?

Back

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Card 10

Front

*25 Give two reasons why arteries have a thick muscular wall.

Back

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Card 11

Front

*26 The capillaries slow down the flow of blood at tissues. What is the significance of this?

Back

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Card 12

Front

What do arteries and veins do?

Back

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Card 13

Front

What do capillaries do?

Back

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Card 14

Front

Do fish have a single or double circulatory system?

Back

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Card 15

Front

What is a double circulatory system?

Back

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