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EbookBell Team
4.4
52 reviewsThe circulatory system runs through the body carrying oxygen and nutrients to our cells and removes waste. It's driven by the never-resting heart, which pumps blood through more than 60,000 miles of arteries and veins. The lymphatic system regulates the amount of liquid in the body among other tasks. Learn about how together, these two systems help the body stay alive and fight invading bacteria and viruses.
