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To breathe. Transport oxygen to lungs & then to bloodstream where it gets carried to brain, muscles, etc.

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Beryl Cassin

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βˆ™ 3y ago
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βˆ™ 13y ago

the SINGULAR ONE AND ONLY PURPOSE of the lungs and the whole respiratory system is to provide oxygen to mitochondria in the cells and they in turn produce extra energy for us to use.

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βˆ™ 12y ago

prevent waste form entering the heart.

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Q: What is the purpose of the respiratory system?
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