1
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The circulatory system.

2
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The blood with carbon dioxide goes to the lung.

3
00:00:10,390 --> 00:00:20,420
In the lung is a spell and the oxygen is absorbed.

4
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The blood goes to the heart and it pumps again.

5
00:00:29,600 --> 00:00:41,600
And then when it pumps the blood goes to the parts of the body that need it and it expels

6
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oxygen and absorbs carbon dioxide and then it goes back to the heart and it happens again

7
00:00:50,600 --> 00:00:51,600
and again.