How are materials transported through your body?

- made up of heart, blood vessels, and blood
- also known as cardiovascular system
- it is like a postal service for your body
- heart is constantly pumping blood for system
- blood is pumped into arteries
- arteries carry blood away from heart
- organs, tissues, and cells take the nutrients they need from the blood and also release waste
- like carbon dioxide
- blood carrying waste goes to veins, back to heart and waste like carbon dioxide is exhaled

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