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The 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. Readers will learn about how together, these two systems help the body stay alive and fight invading bacteria and viruses.
Author
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English
Description
The endocrine system is essential to human life. It enables a person to grow, respond to change and stress, and helps turn food into energy. The reproductive system has one crucial task: that of making the next generation of people. Readers learn how these two remarkable systems work together to ensure survival of the human race.
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