Our blood is really important: it protects us from invaders, it heals our skin when we injure ourselves and it transports a lot of things through our body. But how does it work? And what happens when the blood goes through all our organs?
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Links
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Video's
The circulatory song
The lymphatic system |
The circulatory system
Atherosclerosis and a heart attack Explanatory video about the circulatory system |
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Source header: Bryan Brandenburg
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