More cards in this set

Card 6

Front

What is an example of an efficient transport system?

Back

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Card 7

Front

What do the lungs also contain?

Back

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Card 8

Front

How is the surface area of the lungs increased?

Back

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Card 9

Front

What do alveoli have?

Back

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Card 10

Front

Why are the lungs ventilated?

Back

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Card 11

Front

Where does oxygen diffuse into?

Back

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Card 12

Front

Where does carbon dioxide diffuse into?

Back

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