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The nervous system is the body's main
control system.
Brain is the mass of nerve tissue in the anterior end of an organism.
It is located in the skull.

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The heart belongs to the circulatory system.
The heart pumps oxygen rich blood to all the part of our body. It also bring oxygen depleted blood back to the long to get more oxygen.
The heart is located in the left side of your chest.

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How Does Your Heart Work? - Science for Kids

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The lungs are a part of the respirator system.
They breathe oxygenated and Cincinnati.
Your lungs are in your chest.

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The Digestive system help us.
It When you eat stuff it turn's in to energy.
In the middle of the body.

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It help us move with the muscles.
everywhere in the body.
You will nervy have a chain.

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muscles system.
It help us pulling,pushing.
It is located everywhere in the body.