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Card 6

Front

How is the effectiveness of an exchange surface increased?

Back

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Card 7

Front

In humans how is the surface area in the lungs increased?

Back

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Card 8

Front

In humans how is the surface area in small intestine increased?

Back

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Card 9

Front

How do the villi provide a larger surface area?

Back

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Card 10

Front

How are the lungs separated by the upper and lower part of your body?

Back

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Card 11

Front

Why does the breathing system take place?

Back

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Card 12

Front

How does the air move into the lungs?

Back

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Card 13

Front

What is the breathing system called?

Back

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Card 14

Front

How does air move into the lungs?

Back

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Card 15

Front

How do we breath out?

Back

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