4. Circulatory and Respiratory system

What does the circulatory system do?

The circulatory system’s function is to move blood throughout the body. This blood circulation keeps organs, muscles and tissues healthy and working to keep you alive.

The circulatory system also helps your body get rid of waste products. This waste includes:

  • Carbon dioxide from respiration (breathing).
  • Other chemical byproducts from your organs.
  • Waste from things you eat and drink.

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